## Question

###### #(d/dx) (tan^(-1)(x/2))(4+x^2)#=?? (a) 4 (b) 1 (c) 2 (d) None of them

#(d/dx) (tan^(-1)(x/2))(4+x^2)#=?? (a) 4 (b) 1 (c) 2 (d) None of them

## Answers

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