1.

If r = [ 2 phi +cos^2(2phi+pi//4)]^(1//2) , then what is the value of the derivative of dr// dphi at phi = pi//4 ?

Answer»

`2((1)/(pi+1))^(1//2)`
`2((2)/(pi+1))^(2)`
`((1)/(pi+1))^(1//2)`
`2((2)/(pi+1))^(1//2)`

ANSWER :D


Discussion

No Comment Found