Question

find y'(1) if y = tan^-1 x + Sec^-1 sqrt(1+x^2)
a. 0
b.2
c.1
d.3

Answer 1

1

Answer 2

PUT TAN X =Z

Answer 3

YOU WILL GET Y = 2 * TAN INVERSE OF X

Answer 4

what is z?

Answer 5

Z IS ANY ANGLE.
IF U PUT X=Z U WILL GET
Y= Z+Z
BUT Z= TAN^-1 (X)
HENCE Y=2* TAN^-1(X)
Y'=2 * 1/(1+X^2)
AND Y(1)=1