Suppose that Nolan throws a baseball to Ryan and that the baseball leaves Nolan's hand at the same height at which it is caught by Ryan. If we ignore air resistance, the horizontal range r of the baseball is a function of the initial speed v of the ball when it leaves Nolan's hand and the angle 0 above the horizontal at which it is thrown. SPEED U (ft/s) 75 80 85 90

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.5: Trigonometric Graphs
Problem 57E
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Suppose that Nolan throws a baseball to Ryan and that the baseball leaves Nolan's hand at the same height at which it is caught by
Ryan. If we ignore air resistance, the horizontal range r of the baseball is a function of the initial speed v of the ball when it leaves
Nolan's hand and the angle 0 above the horizontal at which it is thrown.
SPEED U (ft/s)
75
80
85
90
35
165
188
212
238
40
173
197
222
249
45
176
200
226
253
50
173
197
222
249
Use the accompanying table and the equations below to estimate the partial derivatives.
f(xo. Yo +Ay) -f (xo.Yo)
Ay
f(xo + Ax, yo) -f(xo. yo)
f. (xo. yo) = lim
Ar-0
(Xo, yo) = lim
Ay-0
Ax
Take a left-hand estimate and a right-hand estimate in each case and give the average of the two as your final answer.
(a) Estimate the partial derivative of r with respect to v when v = 80ft/s and 0 = 45".
i
dv
(b) Estimate the partial derivative of r with respect to 0 when v = 80ft/s and 0 = 45°.
%3D
dr
i
ANGLE 0 (degrees)
Transcribed Image Text:Suppose that Nolan throws a baseball to Ryan and that the baseball leaves Nolan's hand at the same height at which it is caught by Ryan. If we ignore air resistance, the horizontal range r of the baseball is a function of the initial speed v of the ball when it leaves Nolan's hand and the angle 0 above the horizontal at which it is thrown. SPEED U (ft/s) 75 80 85 90 35 165 188 212 238 40 173 197 222 249 45 176 200 226 253 50 173 197 222 249 Use the accompanying table and the equations below to estimate the partial derivatives. f(xo. Yo +Ay) -f (xo.Yo) Ay f(xo + Ax, yo) -f(xo. yo) f. (xo. yo) = lim Ar-0 (Xo, yo) = lim Ay-0 Ax Take a left-hand estimate and a right-hand estimate in each case and give the average of the two as your final answer. (a) Estimate the partial derivative of r with respect to v when v = 80ft/s and 0 = 45". i dv (b) Estimate the partial derivative of r with respect to 0 when v = 80ft/s and 0 = 45°. %3D dr i ANGLE 0 (degrees)
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