Chapter 1, Problem 58RE

A Skydiver When a skydiver jumps from an airplane, his downward velocity, in feet per second, before he opens his parachute, is given by v=1761-0.834t, where t is the number of seconds that have elapsed since he jumped from the airplane. What is the velocity after 5 seconds?

Solve for x. If necessary, round to the nearest ten-thousandth. (If there is no solution, enter NO SOLUTION.) In(3x – 5) In(x + 5) X =

Solve for x. (3x) 45° Solve for x. (5x + 80)° (120 + x)° Solve for x. (3x – 13) (7x + 3)°

The amount of time in seconds it takes for a swimmer to hear a single, hand-held, starting signal is given by the formula below, where (x,y) is the location of the starter (in meters), (0,p) is the location of the swimmer (in meters), and C is the air temperature (in degrees Celsius). Assume that the starter is located at the point (4,-2). Answer parts a and b below. t(x,y.p.C) = √²+(y-p)² 331.45+0.6C a. Calculate t(4, -2,30,20) and t(4, -2,20,20). Could the difference in time change the outcome of a race? t(4, -2,30,20) = (Round to five decimal places as needed.) Ay p Swimmer Starter (4,-2) P

For what numbers x, - 3nsxs3T, does csc x = 1? Refer to the graph, which shows y = cscx in blue and y = sin x in red. In the interval – 3rSxs 3n, what is the smallest value of x for which csc x= 1? 21 (Type an exact answer, using n as needed. Use integers or fractions for any numbers in the expression. Simplify your answer.)

So da = d.x 4-x

HW3 find if y=1 del X4/2

t√t + t 1² dx

Solve the following ODE. y" + 2y" – y – 2y = 9- 123 NOTE: Write arbitrary constants as c1, Cg, and cg. y(a) = C1 e + c2 e+ c3 e-2 +6 x - 9 x2 - 15