Work Step by Step
Using the product rule, you can find B'(t), then substitute in the given values for N(t), N'(t), M(t) and M'(t). See the picture for mathematical steps.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.