For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (3 sin t)i - (8 cos 3t)j +e-7tk ; to = 0
A. x = 3t, y = -8, z = 1 - t
B. x = 3t, y = 8, z = 1 + t
C. x = 3, y = -8t, z = -7 + t
D. x = 3t, y = -8, z = 1 - 7t
Answer: D
Mathematics
You might also like to view...
Set up an integral for the length of the curve.y = 
, 
? x ? 
A. 
B. 
C. 
D. 
Mathematics
Find the y-intercepts for the parabola whose equation is given. If the y-intercepts are irrational, round your answers to the nearest tenth.y = -x2 + 19x - 90
A. y-intercept (0, -9) B. y-intercept (0, 90) C. y-intercept (0, 9) D. y-intercept (0, -90)
Mathematics
Factor completely. If the polynomial is prime, say so.x2 - x - 6
A. (x + 2)(x - 3) B. (x + 3)(x - 2) C. Prime D. (x + 1)(x - 6)
Mathematics
Find the greatest common factor of the numbers.120 and 280
A. 5 B. 40 C. 20 D. 8
Mathematics