differentiation

[rancid yarrow]

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[obsidian knoll]

can someone show me how they applied the product rule

like what would be u and v

[sage shuttle]

$$(x^2-1)\frac{d(25-x^2)}{dx} + (25-x^2)\frac{(x^2-1)}{dx}$$

[hasty dome]

Lumberdude#8174