Find the following. Assume that the letter can represent any real number.
A. 
- 7
B. 
- 7
C. (z - 7)2
D. 
Answer: D
Mathematics
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Find the equation of the tangent plane to the given surface at the indicated point.x2 + 2yz + y2 - 3xz - z2 - 18 = 0, (1, -3, -1)
A. 5(x - 1) - 8(y + 3) + 13(z + 1) = 18 B. 5(x - 1) - 8(y + 3) - 7(z + 1) = 0 C. 5(x - 1) - 8(y + 3) = -7(z + 1) D. 5(x + 1) - 8(y - 3) - 7(z - 1) = 0
Mathematics
Solve the differential equation.xy '+ 4y = 
, x > 0
A. y = 
, x > 0
B. y = 
, x > 0
C. y = 
, x > 0
D. y = 
, x > 0
Mathematics
Convert to base ten.436eight
A. 296 B. 268 C. 286 D. 269
Mathematics
Find the limit  FIGURE 1.png)
, if it exists. Select the correct answer.
a. 1 b. 3 c. 2 d. Does not exist
Mathematics