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Computing the Value of a Function
publish date: 2026/05/23 18:30:34.034203 UTC
volume_mute
Let f(x)=x2−2x+3. What is f(5)?
Correct Answer
18
Explanation
Substitute x=5 into the formula:
f(5)=52−2(5)+3=25−10+3=18
This is the standard method: replace every occurrence of x in the formula with the given value.
Reference
Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012