General antiderivative of a sum of power functions
Let .
Find the general antiderivative of .
Hint
Rewrite each term using fractional exponents: and . Then apply the reverse power rule to each term separately, and don't forget the single overall .
Step-by-step solution
Rewrite . Apply the reverse power rule term by term: , and .
Adding these results and including a single arbitrary constant gives the general antiderivative . You can check this by differentiating: , confirming the answer.
Role of the arbitrary constant
Hint
Step-by-step solution
The answer is C. In the solution to part a, the general antiderivative was written as H(x) = 2x^{3/2} - 4x^{1/2} + C, where C denotes the arbitrary constant of integration. This constant accounts for the fact that any two antiderivatives of the same function differ only by a constant, since the derivative of a constant is zero.
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