Solve the problem.Find the measure of the unknown leg of this right triangle. Give its length in simplified radical form, and give a decimal approximation to the nearest thousandth. 
A. 2
; 18.868
B. 2
; 15.232
C. 4
; 12.649
D. 2
; 20.688
Answer: C
Mathematics
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Find the gradient field of the function.f(x, y, z) = ln
+ z4
A. ?f = 
i + 
j + 
k
B. ?f = 
i + 
j + 
k
C. ?f = 
i + 
j + 
k
D. ?f = 
i + 
j + 
k
Mathematics
Use Gauss's Divergence Theorem to calculate 
.F(x, y, z) = 3xi + 3yj + 2zk, S is the cube 0 ? x ? 1, 0 ? y ? 1, 0 ? z ? 1.
A. 10 B. 8 C. 1 D. 22
Mathematics
Evaluate the surface integral of G over the surface S.S is the cylinder y2 + z2 = 25, z ? 0 and 4 ? x ? 6; G(x, y, z) = z
A. 500 B. 20 C. 100 D. 50
Mathematics
Multiply.(5 - 6i)(7 + 6i)
A. -36i2 - 12i + 35 B. 71 - 12i C. -1 - 72i D. 71 + 12i
Mathematics