Fourier series: Coefficients of Fourier series
Piecewise continuous and smooth functions
Consider the piecewise defined real function \[f(x)=\begin{cases}\displaystyle {{8}\over{5 x -1}}+9 &\text{if }\displaystyle x\le0\\ \\ \displaystyle -3 x -7 &\text{if }\displaystyle 0\lt x\lt9\\\\\displaystyle 4 x ^2+3 x +6 &\text{if } \displaystyle x\ge9 \end{cases} \]
Evaluate \(f(7)\).
Evaluate \(f(7)\).
| \(f(7)=\) |
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