Question #7b915

1 Answer
Justin
Jun 21, 2017

#F^(-1)=cos(x/2)#

Explanation:

The inverse function #f^(-1)(x)# is a reflection of the function #f(x)# along the curve #y=x#. In other words, switching #x# and #y# around.

#F(x)=2arccosx#
Let #y=F(x)#

#y=2arccosx#
#x=cos(y/2)#
#F^(-1)=cos(x/2)#

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