Question:

If a, b, c are real and a² + b² + c²= 1, then ab + bc + ca

Last updated: 7/14/2022

If a, b, c are real and a² + b² + c²= 1, then ab + bc + ca

If a, b, c are real and a² + b² + c²= 1, then ab + bc + ca lies in the interval: 1 (A) (B) [0, 2] 9[-2] ON (D)