Matrices & Determinants Questions and Answers
Algebra
Matrices & DeterminantsEspa An initial amount of 3100 is invested in an account at an interest rate of 9 per year compounded continuously Assuming that no withdrawals are made find the amount in the account after five years Do not round any intermediate computations and round your answer to the nearest cent
Algebra
Matrices & DeterminantsUse the following preference schedule to answer questions 44 and 45 6 4 C B D A First choice Second choice Third choice Fourth choice 5 D C B A 8 A D C B A C 44 Which candidate will be chosen if the Contingent Method is used A A B B C C D D 45 Which candidate will be chosen if the Instant Runoff Method is used A A B B C C
Algebra
Matrices & Determinantscide whether or not the equation has a circle as its graph If it does give the center d the radius If it does not describe the graph x y 8x 4y 4 elect the correct choice below and if necessary fill in the answer boxes to complete your choice DA The graph of the equation is a point OB The graph of the equation is a line OC The graph of the equation is a circle with center The radius of the circle is OD The graph is nonexistent Type an ordered pair
Algebra
Matrices & DeterminantsUsing the 68 95 99 7 Rule determine what of values lie in the space marked with X 3 s d O 0 15 2 35 13 5 34 X 2 s d 1 s d mean 1 s d 2 s d 3 s d
Algebra
Matrices & DeterminantsThe predicted temperature for the next 10 days in Fahrenheit is the following 71 75 74 80 83 86 90 85 81 80 What is the median temperature in Fahrenheit Do not round your answer
Algebra
Matrices & DeterminantsConsider the double jointed robotic arm shown in the figure Let the lower arm be modeled by a 2 1 2 the middle arm be modeled by b 3 4 3 and the upper arm by c 2 3 4 where units are in feet a Find a vector d that represents the position of the hand b Determine the distance of the hand from the origin a d 0 0 0
Algebra
Matrices & DeterminantsGiven v 9j and w j a find the dot product v w b find the angle between v and w c state whether the vectors are parallel orthogonal or neither a v w b What is the angle betweenv and w Do not round until the final answer Then round to the nearest tenth as needed c Are vectors v and w parallel orthogonal or neither O orthogonal Oparallel
Algebra
Matrices & DeterminantsVials in a chemistry lab are marked with letters Each vial is filled with a chemical In the table below an X denotes the pairs of chemicals that cannot be mixed together AB C D E F A X X X X B X X X C D X X X X E X X F X X X In making a graph to represent these conflicts how many edges would be on vial B
Algebra
Matrices & Determinants3 S 0 02 Rx d 5 is S in 1 You must support your answer C1 C ER a 12 points Find a 3 x 4 reduced echelon matrix R and a vector d E R such that the solution set of the linear system 1 b 5 points Suppose that the augmented matrix R d of the linear system Rx d that you determined in part a in reduced echelon form is obtained from the augmented matrix A b of another linear system Ax b by first subtracting 3 times the first row from the second row then subtracting 5 times the second row from the third row Find the 3 x 4 matrix A and the vector b E R Show the details of your work c 8 points Now consider any linear system Cx f for some 4 x 4 matrix C and vector fER whose solution set is S in 1 Is the set consisting of columns of C linearly independent Why or why not
Algebra
Matrices & Determinantsa 13 points Find a 4 x 4 matrix C such that i C is not invertible and ii every entry of C is nonzero b 12 points Does there exist a 5x2 matrix A and a 2x5 matrix B such that AB is invert Either provide a 5x2 matrix A and a 2x5 matrix B such that AB is invertible or other show that for every 5x2 matrix A and every 2x5 matrix B the product AB is not invert
Algebra
Matrices & DeterminantsFind the orthogonal projection of b 4 4 2 onto the column space of the matrix A Enter each vector as a comma separated list of its components A 4 2 2 0 1 4 2 4 1
Algebra
Matrices & Determinants1 pt Let v W WI 3 and u 2 For W span u write vias the sum of two orthogonal vectors w in Wland win W
Algebra
Matrices & Determinants1 pt Perform the Gram Schmidt process on the following sequence of vectors in the given order then normalize the resulting orthogonal basis 8 6 0 y I 2
Algebra
Matrices & Determinants9 Find the volume between the cone x Spherical coordinates y z2 and the sphere centered at 0 0 0 of radius 2 U
Algebra
Matrices & DeterminantsFind the following indefinite integral 3x2 1 x Xdx O a x x c C b x x ex c d C 4 14 3x
Algebra
Matrices & Determinantswhether the system is inconsistent or the equations are dependent 3x 3y 3z 3 4x 2y 9z 25 2x 4y 3z 3
Algebra
Matrices & DeterminantsUse the figure to answer the questions below 00 Given that the circle has a radius of 8 express the area of the figure highlighted in blue in the image as a function of 0 Assume that is measured in rac A 8
Algebra
Matrices & Determinants5 Find the third derivative of f x 4sinx a f x 600 b f x 60 4 c f x 600 7 X 4cosx 60 4cosx 4cosx
Algebra
Matrices & DeterminantsFor mutually exclusive events R R and R we have P R 0 05 P R 0 7 and P R 0 25 Also P Q R 0 7 P Q1R 0 5 and P Q1R 0 2 Finc P R 10 P R 19 Type an integer or a simplified traction
Algebra
Matrices & DeterminantsJse synthetic division to find the quotient and remainder when 8x a Complete this synthetic division table 2 8 21 U 3 0 20 21x x 2 1 b Write your answer in the following form Quotient 20 1 x 2 21x 20 is divided by x 2 by completing the parts belo Remainder x 2 X
Algebra
Matrices & DeterminantsFind an orthogonal matrix Q that diagonalizes S e 4 Gl 1 31 FI G What is A
Algebra
Matrices & DeterminantsThe given matrix determines a linear transformation T Find all x such that T x 0 4 2 6 3 5 9 0 9 6 14 6 4 9 1 7 7 Select the correct choice below and fill in the answer box within your choice OA There is only one vector which is x OB X XA C X X D x x X3 XA
Algebra
Matrices & DeterminantsFind a possible formula for the polynomial shown on the right The black point labelled on the graph is 1 4 NOTE Enter the formula with lowest possible degree y 60 50 40 30 20 10 10 10 20 30 40
Algebra
Matrices & Determinantsork Homework 7 2 list K Toward the middle peaches for cannin late and extra late date of ripening D to the right were re
Algebra
Matrices & Determinantsasis for the column space of A is vector A L 3 2 1 5 6 27 9 10 15 8 3 12 1 00
Algebra
Matrices & DeterminantsGive integers p and q such that Nul A is a subspace of RP and Col A is a subspace of R 0 A 7 16 5 06 7 4 3 2 2 Nul A is a subspace of RP for p and Col A is a subspace of R for q
Algebra
Matrices & DeterminantsWhich of the following tables represent functions A B E F X y X y X y X y X y X 1 5 1 8 6 1 4 5 5 5 9 10 1 1 8 10 11 20 1 4 3 10 6 6 6 2 3 4 11 13 22 13 9 5 11 2 18 5 13 15 26 15 6 5 12 12 2 3 15 30 14 20 100 107 160
Algebra
Matrices & DeterminantsUse the graph to approximate the number of points of intersection of the graphs of y and Y2 Y 2 sin x 23x 1 3x N KIN 2 3 point s of intersection y 3 2 y KIN Y 2 3x 2 X
Algebra
Matrices & DeterminantsH Select all of the vectors that are in the span of u u Check every statement that is correct Let U G A The vector B The vector and 12 is in the span D All vectors in R2 are in the span OG We cannot tell which vectors are in the span C The vector 8 E The vector 3 F The vector is in the span 6 3 is in the span is in the span is in the span
Algebra
Matrices & DeterminantsNext question gement of a firm wishes to check on the opinions of its workers Before the workers are interviewed they are divided into various categories Define events E F and G asa shown Complete parts a through f E Worker is on the day shift F Worker has worked more than 4 years G Worker contributes to a voluntary retirement plan c Describe the event EU G in words OA The worker is on the night shift and the worker contributes to a voluntary retirement plan OB The worker is on the day shift and the worker does not contribute to a voluntary retirement plan OC The worker is on the night shift or the worker contributes to a voluntary retirement plan or both OD The worker is on the day shift or the worker does not contribute to a voluntary retirement plan or both d Describe the event F in words The worker has worked for e Describe the event FUG in words OA The worker has worked for more than 4 years or the worker contributes to a voluntary retirement plan or both OB The worker has worked for less than 4 years or the worker does not contribute to a voluntary retirement plan or b Submit qu
Algebra
Matrices & DeterminantsS Use Cramer s rule to find the value of x that satisfies the system of linear equatic 5x y 2z 3 Sx 5y 3z 0 3x 4y z 1 1000 The determinant of the coefficient matrix is D 60 20
Algebra
Matrices & DeterminantsGraph the functions f x x g x x 5 and system Then describe what effect adding a constant parabola 10 9 bot 9 8 7 6
Algebra
Matrices & DeterminantsV1 V2 4 Let G be a basis for a vector space V of dimension m Show that a linear combination of vecto is equal tov in V if and only if there is a linear combination of the coordinate vecto V g V2 g Vk g that is equal to the coordinate vector v in R Vk
Algebra
Matrices & DeterminantsP find the change of coordinates matrix from the basis B 1 52 2 1 91 1 41 to the standard basis Then write t as a linear combination of the polynomials in B In P2 find the change of coordinates matrix from the basis B to the standard basis P C B Simplify your answer Write t as a linear combination of the polynomials in B P 5 2 1 01 1 41 Simplify your answers
Algebra
Matrices & Determinantstermine the number of solutions to the augmented trix 201 1 1 ct one a 14 32 35 01 no solution b 1 solution c 2 solutions IN d infinitely many solutions
Algebra
Matrices & DeterminantsLet y 1 and u 3 Write y as the sum of a vector in Span u and a vector orthogonal to u y z Type an integer or simplified fraction for each matrix element List the terms in the same order as they appear in the original list
Algebra
Matrices & DeterminantsDraw a picture of T house for these matrices D 3 and A 7 7 3 3 and U H 0 1
Algebra
Matrices & DeterminantsLet p 1 x2x p2 4 4x 8x p3 7 Find a basis for the subspace of P2 spanned by the given vectors If less than 3 vectors are required one or more of the vectors below can be set to zero Use the above vectors if possible I e use v37 instead of v3 1 V1 V V
Algebra
Matrices & DeterminantsUse the definition of Ax to write the vector equation as a matrix equation 2 5 0 4 Z 23 Z4 2 8 8 Z 0 14 0 4
Algebra
Matrices & DeterminantsLet W be the subspace spanned by the given vectors Find a basis for W B W W 0 5
Algebra
Matrices & DeterminantsConsider the following 4 05 6 16 5 04 a Compute the characteristic polynomial of A det A 2 2 A b Compute the eigenvalues and bases of the corresponding eigenspaces of A Repeated eigenvalues should be entered repeatedly with the same eigenspaces 2 N 23 li has eigenspace span has eigenspace span has eigenspace span 1 11 11 c Compute the algebraic and geometric multiplicity of each eigenvalue A has algebraic multiplicity and geometric multiplicity 22 has algebraic multiplicity and geometric multiplicity 23 has algebraic multiplicity and geometric multiplicity smallest value largest value