Linear approximation calculator helps to find out best fit for a straight line which is closely related to a curve. Straight line equation is given by y=mx+c. This approximation is also known as tangent line approximation. The equation for the linear equation is given below.

f(x)=f(a)+f'(a)(x-a)     at x=a

Where f(x) is the given function
f'(x) is the first derivative of the given function

## Steps for Finding Linear Approximation

The steps for calculating the linear approximation are given below:

Step1: Calculate value of f(x=a)

Step2: Determine the first derivative f'(x) of the given function

Step3: Find out the value of f'(x=a)

Step4: Substitute these values in the given equation and simplify it and formulate the straight line equation.

f(x)=f(a)+f'(a)(x-a)     at x=a

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