# Find a formula for f ' where it is defined

1 Answer. Sorted by: 1. If x ≤ 0 then F ( x) = ∫ − 1 x − t d t = 1 2 ( 1 − x 2). If x ≥ 0 then F ( x) = F ( 0) + ∫ 0 x t d t = 1 2 ( 1 + x 2). Combining gives F ( x) = 1 2 ( 1 + x | x |). It is easy

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## Find f(a) for a given value of a and the equation of tangent line

Find a formula for f' where it is defined. f'(x) = Sket; The graph of a differentiable function f on the closed interval (1, 7) is shown above. Given that h(x) = int_1^x f(t) dt on the closed interval, find

## Write a formula for f(x)

For example, find the inverse of f (x)=3x+2. Inverse functions, in the most general sense, are functions that reverse each other. For example, if takes to , then the inverse, , must take to . Or in other words, . In this article we will learn how to

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