Question

if y=cos minus1x,find d2y÷d2x in term of y alone​

Answer 1

Answer:

y" = 1/2 Sin2y

Step-by-step explanation:

start with taking Cos of both sides.

cos y = x

y' = -Sin y

y" = -cos y x y' , y' is - sin y as shown above.

y" = cos y x Sony

so Y" = 1/2 Sin 2y