Chapter 2: Q11. (page 60)

Find $f (5)$ if $f (x) = x^{2} - 3 x$ .

Short Answer

Expert verified

The value of $f (5)$ is 10.

Step by step solution

– Order of operations.

To evaluate any expression involving more than one operation, follow the below order of operations:

First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
Evaluate the exponents.
Perform Multiplication and division from left to right.
Perform addition and subtraction from left to right.

– Given information.

The given function is:

$f (x) = x^{2} - 3 x$

Substitute x=5 in the given function to find the value of $f (5)$ .

$f (5) = {(5)}^{2} - 3 (5)$

– Calculate the value by simplification.

$\begin{matrix} f (5) = {(5)}^{2} - 3 (5) \\ = 25 - 15 \\ = 10 \end{matrix}$

Thus,the value of $f (5)$ is 10.

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Find $f (5)$ if $f (x) = x^{2} - 3 x$ .

Short Answer

Step by step solution

– Order of operations.

– Given information.

– Calculate the value by simplification.

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Find f5 if fx=x2-3x.

Short Answer

Step by step solution

– Order of operations.

– Given information.

– Calculate the value by simplification.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Mechanics Maths

Theoretical and Mathematical Physics

Applied Mathematics

Statistics

Logic and Functions

Calculus

Study anywhere. Anytime. Across all devices.

Find $f (5)$ if $f (x) = x^{2} - 3 x$ .