Use the integration by parts formula, i.e.,

∫udv = uv - ∫vdu

=(-x cos 5x) / (5) + (sin 5x) / (25) +C

Here is the full solution;

Use the integration by parts formula, i.e.,

∫udv = uv - ∫vdu

=(-x cos 5x) / (5) + (sin 5x) / (25) +C

Here is the full solution;

Nobody told me there would be masth.

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