Solve the equation by completing the square.4x2 - 4x - 8 = 0
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = xy2 + yex2 + 5
A. 
= yex2(1 + 2x2); 
= x; 
= 
= y + xex2
B. 
= 2yex2; 
= 2x; 
= 
= 2y + 2xex2
C. 
= 2yex2(1 + 2x2); 
= 2x; 
= 
= 2y + 2xex2
D. 
= 2yex2; 
= 2x; 
= 
= 2xex2
Mathematics
Divide.8531 ÷ 46
A. 185 B. 185 R 21 C. 188 R 5 D. 188 R 38
Mathematics
Solve by using the Superposition Theorem:
R1 = 4.7 Kê, R2 = 3.3 Kê, R3 = 5.1 Kê, E1 = 40 V, and E2 = 20 V.
Find the value of VR .
2
a. 0.488 V
b. 0.732 V
c. 0.363 V
d. 5.04 V
e. 11.44 V
Mathematics
Find the exact value of the expression if ? = 60°. Do not use a calculator.g(?) = cos ?Find 
.
A. 
B. 
C. 
D. 16
Mathematics