At the given point, find the line that is normal to the curve at the given point.6x2y - ? cos y = 7?, normal at (1, ?)

A. y = -2?x + 3?
B. y = x -  + ?
C. y = - x +  + ?
D. y = x -  + ?

Answer: D

Mathematics

Solve the problem.Evaluate at t = 3? for the function w(x, y) = x2 - y2 - 9x; x = cost, y = sin t.

A. -13 B. -11 C. 0 D. -7

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Mathematics

Solve the inequality and express the solution set in interval notation. Graph the solution set on the real number line.x + 6 < 10

A. x ? 16; (-?, 16]

B. x < 16; (-?, 16)

C. x < 4; (-?, 4)

D. x > 4; (4, ?)

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Mathematics

Use a double-angle identity to find the exact value of the expression.1 - 2 sin2

A.
B. -
C. -
D.

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Mathematics

Find all zeros.

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Mathematics