Differential equations Questions and Answers

aluate x 30x 30y dA where D is the shaded region enclosed by the lemniscate curve sin 20 in the figure 0 5 r sin 20 X 0 5 se symbolic notation and fractions where needed

12 For the function below find a the critical nur

Part 3 of 3 Find the open intervals where the function f x 4x 24x 170x 1 is c Select the correct choice below and if necessary fill in the answer box to co A The function has a point of inflection at 2 403 Type an ordered pair using integers or fractions Simplify your answe

21 What is the period of the graph of y sin2x A 4 B C 7 FIN

4 9 Wikipedia A sample survey of 852 adult Internet users found that 53 look for information on the online collaborative en cyclopedia Wikipedia a Give the standard error SE of p the proportion of all adult Internet users who look for information on Wikipedia b Give a 95 confidence interval for the proportion of all adult Internet users who look for information on Wikipedia W wil genius Does cheating enhance creativity Researchers recruited 178 bjects and asked participants to guess whether the outcome of a virtual coin ss would be heads or tails After indicating their prediction participants had to press a button toss the coin virtually They were asked to press the button only once but they were given the portunity to test the button several times before beginning the experiment Thus participants uld cheat by pressing the button before making their prediction and appear to have pressed the itton one time for each prediction Participants then reported whether they had guessed correctly id received a 1 bonus if they had The program recorded the outcomes of the initial virtual in tosses so that researchers could tell whether participants cheated After the coin toss task all rticipants were given a test that measured creativity Here are the summary statistics for scores

Given P x 1 1 W full equation including P P x x 1 x

A small radio transmitter broadcasts in a 25 mile radius If you drive along a straight line from a city 32 miles north of the transmitter to a second city 30 miles east of the transmitter during how much of the drive will you pick up a signal from the transmitter Give your answer rounded to the nearest tenth of a mile

6 12 Determine whether the given function is a solution of the differential equation 6 y sin x cos x y y 2 sin x 7 y e e 2 y 2y 2e

Compute L3 and R3 for Graphs A and B The value of L3 for Graph A is Simplify your answer 16 14 12 10 00 Ay 8 79 6 4 2 0 0 16 14 Ay 12 10 8 6 st 4 NC 2 2 DEPEN y f x 4 6 6 Graph A y g x 8 X 10 X

Which slope field is associated with the given differential equation dy x 1 dx Choose the correct slope field O A 6 4 2 2 46 OB 3 st Ci O C 13 24 16 71 11 6 4 2 246

Give the order of the differential equation below wh xy 6y y 8 Choose the correct answer below OA The given equation is a second order differ higher derivative

sin COS tan 1 0 2 3 ans 1 x t From the information given find the quadrant in which the terminal point determined by t lies Input I II III or IV a sin t 0 and cos t 0 quadrant b sin t 0 and cos t 0 quadrant c sin t 0 and cos t 0 quadrant d sin t 0 and cos t 0 quadrant

Find the general or particular solu 0 2x7 c

Please show all your work NO WORK NO CREDIT 55 44 Find a formula for the exponential function passing through the points 3 and 2 20

ssignmen Previous Problem P point At noon ship A

Find any vertical asymptotes as well as the location of any holes in the graph of the given rational functio x 3x 28 x 7x 12 f x