Find an equation for the parabola with vertex (5,5) and directrix y-axis.
What will be an ideal response?
(y-5)² = 20(x-5)
Mathematics
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Use the total differential dz to approximate the change in z as (x, y) moves from P to Q. Then use a calculator to find the corresponding exact change ?z (to the accuracy of your calculator).ln (xy2); P(5, -1), Q(4.95, -.99)
A. dz = 0.03; ?z = 0.0301510076 B. dz = -0.3; ?z = -0.301510076 C. dz = 0.3; ?z = 0.301510076 D. dz = -0.03; ?z = -0.0301510076
Mathematics
Use the substitution formula to evaluate the integral.
A. 7 B. 14 C. 28 D. -7
Mathematics
Calculate 
Mathematics
Evaluate the expression.
A. 
B. 2!
C. 30
D. 
Mathematics