1.

`(sin x)/(sin(x -alpha))` का समाकलन कीजिये -

Answer» Correct Answer - `(x-alpha)cosalpha+sin alpha log sin(x-alpha)`
`I = int(sinx)/(sin(x-alpha)) dx` माना `x - alpha = t rArr dx = dt`
`I = int(sin(t +alpha))/(sin t) dt = int(sin t cos alpha + cos t sinalpha)/(sin t)dt`


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