Find the elasticity.q = D(x) = 
A. E(x) = 
B. E(x) = 
C. E(x) = 
D. E(x) = 
Answer: D
Mathematics
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Find the center of mass of the thin rod with the given density function.Find the center of mass of a thin rod that lies along the semicircle y = 
if the density of the rod is 
.
A. 
= 0, 
= 
B. 
= 1, 
= 1
C. 
= 0, 
= 1
D. 
= 
, 
= 
Mathematics
Express the relationship between a small change in x and the corresponding change in y in the form 
.f(x) = 5x2 - 8x - 9
A. dy = (10x - 8) dx B. dy = 10x - 9 dx C. dy = 10x - 16 dx D. dy = 10x dx
Mathematics
The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + y2 - 4x = 0
A. r = 4 sin ? B. r cos2 ? = 4 sin ? C. r = 4 cos ? D. r sin2 ? = 4 cos ?
Mathematics
Evaluate.120
A. -1 B. 1 C. 12 D. 0
Mathematics