1.

If alpha = lim_(x to 0) (x*2^(x)-x)/(1 - cos x) and beta= lim_(x to 0) (x*2^(x)- x)/(sqrt(1 + x^(2))-sqrt(1-x^(2))) then

Answer»

`ALPHA = 5 BETA`
`alpha = 2beta`
`beta = 2ALPHA^(2)`
`beta = (1)/(6)alpha`

ANSWER :B


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