If `f(x)=sinx` and `g(x)=2x` be two real functions, then describe `gof` and `fogdot` Are these equal functions?

Explanation

Given as `f(x)=sin x and g(x)=2 x`

We know
`
{f:} {R} to[-1,1] and g: R to R`

Clearly, the range of f is a subset of the domain of g.
`
gof: R to R`
`
(g o F)(x)=g(f(x))`
`
=g(sin x)`
`
=2 sin x`

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