Let f(x, y, z) = xyz(1 + eyz). Find
.
A. xy(1 + eyz) + xy2zeyz
B. xy(1 + eyz) + xy(1 + yeyz)
C. xy(1 + yeyz)
D. xy(1 + ey)
E. none of these
Answer: A
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Find fx, fy, and fz.f(x, y, z) = ln (xy)z
A. fx = - ; fy = -
; fz = ln (xy)
B. fx = ; fy =
; fz = z ln (xy)z - 1
C. fx = ; fy =
; fz = ln (xy)
D. fx = z ln ; fy = z ln
; fz = ln (xy)
Consider the polar equation
(a) Find the eccentricity and an equation of the directrix of the conic. (b) Identify the conic. (c) Sketch the curve. >
Let f be the function defined by . Find
,
class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_49d4a7398c74433c9b60642af" />, ,
, and
.
What will be an ideal response?
Solve.The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 200 yards with a 7-iron, how far should he average with a 5-iron?
A. 167 yards B. 211 yards C. 189 yards D. 240 yards