Question

Let $f$ be a function such that $f$ : $x\to 2x^2+3$. Find the value of : $f\left(1\right)$.

• A. $1$
• B. $2$
• C. $4$
• D. $5$

Answer 1

The correct option is D $5$

Given $f:x\to 2x^2+3$.

Then $f\left(x\right)=2x^2+3$.

$\therefore f\left(1\right)=2\left(1^2\right)+3=2+3=5$