Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\displaystyle\lim_{ x \rightarrow 0 } \left( \sin ax \times \cos cx/ \sin bx \right)$$

Evaluate

$0$

Differentiate w.r.t. a

$0$

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