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Question Number 4?

in Calculus
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a=2,b=3.

option A.

if function is differentiable then continous also.

so b*(-1)*(-1)+a(-1)+4=a(-1)(-1)+b

a=2.

and also differentiable.

so

2b(-1)+a=2a(-1)

-2b= -3a

b=3.
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