Fourier series: Coefficients of Fourier series
Piecewise continuous and smooth functions
Consider the piecewise defined real function \[f(x)=\begin{cases}\displaystyle 5 x ^2+2 x -5 &\text{if }\displaystyle x\lt-1\\ \\ \displaystyle 3-{{9}\over{5 x +9}} &\text{if }\displaystyle -1\le x\lt7\\\\\displaystyle x-1 &\text{if } \displaystyle x\ge7 \end{cases} \]
Evaluate \(f(-4)\).
Evaluate \(f(-4)\).
| \(f(-4)=\) |
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