Find 
by implicit differentiation.
10 cos x siny = 16
tax (x) tan (y)
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Multiply the polynomials.(-4x - 10y)(2x - 2y + 1)
A. -8x2 + 8xy - 4x + 20y2 B. -8x2 - 20xy - 4x + 20y2 - 10y C. -8x2 - 12xy - 4x + 20y2 - 10y D. -8x2 - 12xy - 12y2
Find the following using a calculator. Round to four decimal places.ln 12,600,000
A. 7.1004 B. 4.8363 C. 0.0610 D. 16.3492
Sketch the graph and show all local extrema and inflection points.f(x) = 2x3 - 15x2 + 24x
A. Local max: (1, 11)
Local min: (4, -16)
Inflection point: 
B. Local min: (3, 6)
No inflection point
C. Local max: (0, 0)
Local min: (2, -8)
Inflection point: (1, -4)
D. No extrema
Inflection point: (0, 0)
Solve the linear programming problem.Minimize z = 21x + 18y + 11 subject to:x ? 0,
y ? 0,
x + y ? 1.
A. minimum: 11 B. minimum: 50 C. minimum: 29 D. minimum: 32