### Home > CALC > Chapter 10 > Lesson 10.3.1 > Problem 10-120

10-120.

A function that satisfies the differential equation

*f*′(*x*) +*f*(*x*) = 0 is: Homework Help ✎*f*(*x*) = sin*x**f*(*x*) = cos*x**f*(*x*) =*e*^{x}*f*(*x*) =*e*^{−}^{x}*f*(*x*) = ln*x*

10-120.

A function that satisfies the differential equation

*f*′(*x*) +*f*(*x*) = 0 is: Homework Help ✎*f*(*x*) = sin*x**f*(*x*) = cos*x**f*(*x*) =*e*^{x}*f*(*x*) =*e*^{−}^{x}*f*(*x*) = ln*x*