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If |c|le1/2 and f(x) is a differentiable...

If `|c|le1/2` and f(x) is a differentiable function at x = 0 given by
`f(x)={(bsin^(-1)((c+x)/2), -1/2ltxlt0),(1/2, x=0),((e^((ax)/2)-1)/x, 0ltxlt1/2):}`
Find the value of 'a' `

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a = 1
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