Fourier series: Coefficients of Fourier series
Piecewise continuous and smooth functions
Consider the piecewise defined real function \[f(x)=\begin{cases}\displaystyle -9 x -3 &\text{if }\displaystyle x\lt0\\ \\ \displaystyle x^2+2 x +5 &\text{if }\displaystyle 0\le x\le3\\\\\displaystyle \sqrt{2}\cdot \sqrt{x} &\text{if } \displaystyle x\gt3 \end{cases} \]
Evaluate \(f(-4)\).
Evaluate \(f(-4)\).
| \(f(-4)=\) |
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