Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, 1) for 5x2 + 2y3 + 6xy = 0.
A. - 
B. - 2
C. - 
D. 
Answer: A
Mathematics
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Determine whether the integration formula is correct. 
dx = (1 + x2) ln (1 + x2) - (1 + x2) + C
A. Yes B. No
Mathematics
Evaluate the expression.(9 + (-2))[7 + (4 + 8)]
A. 26 B. 89 C. 22 D. 133
Mathematics
Find the elasticity.q = D(x) = 800 - x
A. E(x) = 
B. E(x) = 
C. E(x) = 
D. E(x) = x(800 - x)
Mathematics
Solve the problem.The formula Z = R sec ? gives the impedance Z (in ohms) in an ac circuit with resistance R (in ohms) and phase angle ? (in radians). Find the average value of Z for an 76.1-? resistor as ? ranges from ?/8 radians to ?/3 radians.
A. 69.5 ? B. 106.2 ? C. 139 ? D. 132.6 ?
Mathematics