📘 calculus and linear algebra
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Derivative Matrix Problems 2Cef61
1. **Problem 1:** Given $f(x) = x^3 - 5x$, find values of $a$ such that $f'(a) = 13$.
2. **Step 1:** Find the derivative $f'(x)$.
Differential Integral Matrices
1. **Expand** $e^x \sin y$ in powers of $x$ and $y$.
Step 1: Recall the series expansions: