differentiation

Question: If the curve $y={{a}^{x}}$ and $y={{b}^{x}}$ intersect at angle $\alpha $ then,$\tan \alpha =$

1) $\frac{a-b}{1+ab}$

2) $\frac{\log a-\log b}{1+\log a\log b}$

3) $\frac{a+b}{1-ab}$

4) $\frac{\log a+\log b}{1-\log a\log b}$

Solution:

Explanation: No Explanation

Tangent and Normal

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