int(x-1)\ e^(-x)\ dx is equal to x e^x+...

`int(x-1)\ e^(-x)\ dx` is equal to ` x e^x+C` (b) `x e^x+C` (c) `-x e^(-x)+C` (d) `x e^(-x)+C`

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Let e^(f(x))=lnxdot If g(x) is the inverse function of f(x), then g^(prime)(x) equal to: (a) e^x (b) e^x+x . (c) e^x+e^x (d) e^(e^x+x)

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