Find the derivative of the function by using the definition.y = 
A. - 
B. - 
C. - 
D. - 
Answer: D
Mathematics
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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) = (4t2 - 4t)i + (t + 9)j + k ; t0 = 2
A. x = 8 + 12t, y = 11 + t, z = 1 B. x = 8 + 12t, y = 11 + t, z = 0 C. x = 12t, y = t, z = t D. x = 8 + t, y = t, z = t
Mathematics
Complete the factoring.-81x7y6 = 9x4y2( )
A. -9xy4 B. -729x4y5 C. -729x3y4 D. -9x3y4
Mathematics
Write the appropriate symbol, either < or >, between the two integers.-129 ___ 10
A. < B. >
Mathematics
Solve the problem.Find the formula for the area of the shaded region and express it in factored form.
A. (7y + 2)(7y - 2) B. (7y + 4)(7y - 4) C. (7y - 2)2 D. (7y - 4)2
Mathematics