
Bobosharif S. answered 12/16/19
PhD in Math, MS's in Calulus
1
a) F(x)=7x+sin(2x), at (0, 0)
Derivative of the F(x): F'(x)= 7+2cos(2x) --> F'(0)=7
Derivative of the inverse function is
(F-1)'(F(x))=1/(F'(x))= 1/(7+2cos(2x))
Hence (F-1)'(F(0))=(F-1)'(0)=1/9. The slope is 1/9.
Equation of the tangent has the form of y-y0=a(x-x0), (x0, y0)=(0, 0)
So the tangent is: y=(1/9)x or y=x/9
Other examples are solved in similar way.