Fourier series: Coefficients of Fourier series
Piecewise continuous and smooth functions
Consider the piecewise defined real function \[f(x)=\begin{cases}\displaystyle 9-7 x &\text{if }\displaystyle x\lt1\\ \\ \displaystyle -9 x ^2+5 x -5 &\text{if }\displaystyle 1\le x\lt3\\\\\displaystyle -{{2}\over{4 x +1}}-5 &\text{if } \displaystyle x\ge3 \end{cases} \]
Evaluate \(f(-1)\).
Evaluate \(f(-1)\).
| \(f(-1)=\) |
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