### Home > CALC > Chapter Ch3 > Lesson 3.3.2 > Problem 3-105

3-105.

If *f *′(*x*) = cos *x* , find two different possible expressions for *f*(*x*). How many solutions are possible? Homework Help ✎

What function has a derivative of cos(*x*)?

If you have not done so already, consider adding a constant to your first solution. Afterall, the derivative of a constant is 0.