Hong Kong
Stage 4 - Stage 5
Evaluating Cubic and Other Power Functions
Interactive practice questions
Consider the function $f\left(x\right)=4+x^3$f(x)=4+x3.
a
Evaluate $f\left(4\right)$f(4).
b
Evaluate $f\left(-2\right)$f(−2).
Easy
1min
If $f\left(x\right)=x^{2.11}$f(x)=x2.11, find $f\left(1.3\right)$f(1.3) correct to three decimal places.
Easy
1min
Consider the function $f\left(x\right)=x^3+5x^2+8x-2$f(x)=x3+5x2+8x−2.
Evaluate $f\left(5\right)$f(5).
Easy
< 1min
If $f\left(x\right)=x^{\frac{1}{2}}$f(x)=x12, find $f\left(0.36\right)$f(0.36) correct to three decimal places.
Easy
1min
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