Find the partial derivative.Find fx(-2, 3) when f(x, y) = (5x + 6y)2.
A. 40
B. -100
C. 80
D. 22
Answer: C
Mathematics
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Solve the initial value problem.
= 6 sin 2 x cos x, y(0) = 6
A. y = 3 cos 2 x + 6 B. y = 2 sin 3 x + 6 C. y = 12 sin x cos x + 6 D. y = - 2 sin 3 x - 6
Mathematics
The two triangles below are similar. Find the unknown side lengths.
A. x = 18 B. x = 14 C. x = 12 D. x = 6
Mathematics
Use partial fractions to find the sum of the series.
A. 
B. 
C. 1
D. 3
Mathematics
Solve the problem.A certain radioactive isotope has a half-life of approximately 950 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 75% of that amount?
A. 394 years B. 319 years C. 1900 years D. 238 years
Mathematics