.Solve y"-2 tan x y' +5y sec x. | %3D

The kinetic energy E of an object varies jointly with the object’s mass m and the square of the object’s velocity v . An object with a mass of 50 kilograms traveling at 16 meters per second has a kinetic energy of 6400 joules. What is the kinetic energy of an object with a mass of 70 kilograms traveling at 20 meters per second?

If a coffee filter is dropped, its velocity after t seconds is given by v(t)=4(10.0003t) feet per second. What is the terminal velocity, and how long does it take the filter to reach 99 of terminal velocity? Use a table increment of 0.1 and given your answer to the nearest tenth of a second.

1. -1 da 2 sec? (8x n) dx

y = In(sec x + tan x) %3D

solve dy/dx +ysec x = tan x

solve and show steps  dy/dx= 2xy