Checking an integral

Exercise and reference answers

Questions

1. Question

   The quickest check on an indefinite integral is to

   Choices

   1. integrate again
   2. differentiate the answer
   3. substitute zero

   Correct choice

   differentiate the answer

2. Question

   On differentiating, the constant becomes

   Choices

   1. one
   2. itself
   3. zero

   Correct choice

   zero

3. Question

   If the derivative matches the integrand, the answer is

   Choices

   1. correct
   2. incorrect
   3. undecidable

   Correct choice

   correct

Explanation