# What is the derivative of fog?

## What is the derivative of fog?

The function fog is called the composed function of g and f. If g is differentiable for any element x and f is differentiable at g(x) fog(x) = f[g(x)] is differentiable at x. The derivative of the function fog is (fog)'(x) = f”[g(x)].

What does fog mean in math?

Solution : f o g is a composite-function. f o g means g(x) function is in f(x) function. f o g = f[g(x)] f(x) = 2x -3 and g(x)= (x+3)/2. ∴ f[g(x)] =[2(x+3)/2] – 3.

### What is derivative of Arcsin?

Derivative of arcsin x Formula The derivative of the arcsin function is, d/dx(arcsin x) = 1/√1 – x² (OR) d/dx(sin-1x) = 1/√1 – x²

How do you find inner and outer functions?

For the function f(x) = e(x · cos(x)) , the outer function is f(x) = e(x) and the inner function is g(x) = x · cos(x).

## How do you find the composite function?

How to Solve Composite Functions?

1. Write the composition in another form. The composition written in the form (f∘g)(x) ( f ∘ g ) ( x ) needs to be written as f(g(x)) f ( g ( x ) ) .
2. For every occurrence of x in the outside function i.e. f , replace x with the inside function g(x) .
3. Simplify the answer obtained.

How to calculate derivative of FG with respect to X?

If f(x) and g(x) are differentiable functions, then the derivative of the product fg with respect to x is given by (fg)’ = f ‘g + f g’ This can be fairly easily derived from the definition. Example To calculate the derivative of h(x) = x2exwe must use the product rule:

### Which is the derivative of the composition of G with F?

If f(x) and g(x) are differentiable functions, then the derivative of the composition of g with f is where the notation g'(f(x)) means the function g'(x) evaluated at f(x). Once again, this result can be established from the definition. Example

What is the derivative of the function f ( x )?

The derivative of a function is the ratio of the difference of function value f(x) at points x+Δx and x with Δx, when Δx is infinitesimally small. The derivative is the function slope or slope of the tangent line at point x.

## When is the derivative of g ( x ) not equal to zero?

If f(x) and g(x) are differentiable functions and g(x) is not equal to zero, then the derivative of the quotient f/gis which can be remembered with the saying “bottom-derivative-top minus top-derivative-bottom over bottom squared”.