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**Monox D. I-Fly****Member**- Registered: 2015-12-02
- Posts: 859

How to solve

? At first I tried to convert cos x to but then realized that only applies if c = 0. So, how?**Online**

**thickhead****Member**- Registered: 2016-04-16
- Posts: 1,086

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Alternatively, use L'Hopital's rule.

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**Monox D. I-Fly****Member**- Registered: 2015-12-02
- Posts: 859

Unfortunately, the target readers haven't learned derivatives yet, so L'Hopital's rule is a no.

Thanks for thickhead.

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