Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (2, 1) for ln x + xy2 + ln y = 0.
A. -1
B. 
C. 1
D. - 
Answer: D
Mathematics
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Solve using the addition and multiplication principles together.3(y + 7) = 4(y - 6)
A. -45 B. 3 C. 45 D. -3
Mathematics
Find a unit vector u in the direction of the given vector.
A. 
B. 
C. 
D. 
Mathematics
Find a linearization at a suitably chosen integer near a at which the given function and its derivative are easy to evaluate.f(x) = -5x2 - 2x + 6, a = 1.1
A. L(x) = -1 B. L(x) = -11 - 12x C. L(x) = 12 - 13x D. L(x) = 11 - 12x
Mathematics
Write a quadratic equation in standard form with the given solution set.{-3
, 3
}
A. x2 + 6
x - 27 = 0
B. x2 - 27 = 0
C. x2 + 27 = 0
D. x2 - 6
x + 27 = 0
Mathematics