1.

`(e^(ax)-e^(-ax))/(e^(ax) + e^(-ax))` का समाकलन कीजिये -

Answer» Correct Answer - `(1)/(a)log(e^(ax)+e^(-ax))`
माना `e^(ax)+e^(-ax) = t rArr (a^(ax) - e^(-ax))dx = (1)/(a)dt`
तब `I = (1)/(a)int(1)/(t)dt = (1)/(a)log(e^(ax) + e^(-ax))`


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