# How do you find the piecewise function?

Table of Contents

## How do you find the piecewise function?

A piecewise function is a function built from pieces of different functions over different intervals. For example, we can make a piecewise function f(x) where f(x) = -9 when -9 < x ≤ -5, f(x) = 6 when -5 < x ≤ -1, and f(x) = -7 when -1

## How do you find a function in terms of x?

Functions

- y can be written in terms of x (e.g. y = 3x ).
- If f(x) = 3x, and y is a function of x (i.e. y = f(x) ), then the value of y when x is 4 is f(4), which is found by replacing x”s by 4″s .

**How do you evaluate a function?**

To evaluate a function, substitute the input (the given number or expression) for the function’s variable (place holder, x). Replace the x with the number or expression. 1. Given the function f (x) = 3x – 5, find f (4).

**What is secant formula?**

The length of the hypotenuse, when divided by the length of the adjacent side, will give the secant of the angle in a right triangle. Therefore, its basic formula is: sec X = \frac{Hypotenuse}{Adjacent Side} Also, it is the reciprocal of the cosine value.

### What is the formula for a secant line?

Answer: The equation of a secant line given two points (a, b) and (c, d) is y – b = [(d – b)/(c – a)] (x – a) Let’s understand the equation of a secant line given two points. Explanation: Let two points joining a secant line be (a, b) and (c, d).

### How do you multiply F – 1x by x – 2?

Use the distributive property to multiply f^ {-1}x by x-2. Use the distributive property to multiply f − 1 x by x − 2. Reorder the terms. Reorder the terms. Variable f cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by f. Variable f cannot be equal to 0 since division by zero is not defined.

**Does f – 1(x) mean 1 f(x)?**

In other words, f − 1(x) does not mean 1 f ( x) because 1 f ( x) is the reciprocal of f and not the inverse.

**How do you find the value of FX in an equation?**

Multiply both sides of the equation by x+1. Multiply both sides of the equation by x + 1. Use the distributive property to multiply fx by x+1. Use the distributive property to multiply f x by x + 1. Subtract 2 from 1 to get -1. Subtract 2 from 1 to get − 1. Combine all terms containing f.

#### What is an exponent-like function?

The “exponent-like” notation comes from an analogy between function composition and multiplication: just as a − 1a = 1 (1 is the identity element for multiplication) for any nonzero number a, so f − 1 ∘ f equals the identity function, that is, This holds for all x in the domain of f.