8. A mass-spring-dashpot system is driven by the external force 2 sin 3t+10 cos 3t. The mass equals 1, the spring constant equals 5, and the damping coefficient equals 2. If the mass is initially located at z(0) = -1, with initial velocity z'(0) = 5, find its equation of motion.

Q: Find the numbers. One positive number exceeds another by 4, and their product is 60.

A:

Q: Find x.

A: Sum of exterior angle of a polygon is 360°.

Q: Multiply. (ex − e−x)2

A: Here we multiply this:

Q: Find the value of x.

A:

Q: Find the value of x.

A:

Q: Find the value of x.

A: We know that the exterior angle is equal to the sum of two opposite interior angle.