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Indefinite integrals

1) The integral of dx divided by the the quantity of e^-x+1

also known as the indefinite integral of dx/((e^-x)+1)

2) Solve the indefinite integral of the quantity of 1 minus e^x all over the quantity of 1 plus e^x with respect to x...

also know as the indefinite integral of (1-e^x)/(1+e^x) dx

Solution Preview

1)

Ok, so we first multiply the top and the bottom by e^x and that gives us:

int(e^x/(1+e^x)*dx)

now we let 1+e^x=u ---> e^x*dx=du---> dx=du/e^x, so we have:

int(e^x/u*du/e^x) and if we simplify we will ...

Solution Summary

This provides two examples of indefinite integrals.

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