For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 
tk; osculating plane at t = 0.
A. x - y = 0
B. x - y = - 
C. x - y = 
D. x - y = 
Answer: A
Mathematics
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Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.cos 46.7°
A. cos 133.3° B. sin 43.3° C. sec 133.3° D. sin 46.7°
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Identify the equation as a parabola, ellipse, or circle.9x2 + 16y2 = 144
A. Parabola B. Ellipse C. Circle D. None of the above
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Graph the function y = g(x), given the graph of y = f(x). g(x) = - 
f(x)
A. 
B. 
C. 
D. 
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Determine if the given ordered triple is a solution of the system.(-1, -4, -3) x + y + z = -8 x - y + 2z = -12x + y + z = -11
A. not a solution B. solution
Mathematics