Question

What is the interval log (x+1)dx equal to?

Answer 1

Step-by-step explanation:

What is the integration of 1 x dx?

In differential calculus we learned that the derivative of ln(x) is 1/x. Integration goes the other way: the integral (or antiderivative) of 1/x should be a function whose derivative is 1/x. As we just saw, this is ln(x). However, if x is negative then ln(x) is undefined!