Question
Let the function $f$ be defined by $y=f(x),$ where $x$ and $f(x)$ are real mumbers. Find $f(\mathbf{2}), f(-3), f(k),$ and $f\left(k^{2}-1\right)$$$f(x)=\frac{3}{x-5}$$
Step 1
We want to find the value of $f(2)$, so we substitute $2$ for $x$ in the function. This gives us $f(2)=\frac{3}{2-5}$. Show more…
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Let the function $f$ be defined by $y=f(x),$ where $x$ and $f(x)$ are real mumbers. Find $f(\mathbf{2}), f(-3), f(k),$ and $f\left(k^{2}-1\right)$ $$f(x)=3-x^{2}$$
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