Find the partial derivative.Let z = f(x, y) = (x + y)8. Find 
.
A. 8(x + y)7
B. 8(x + y)
C. 8y(x + y)7
D. 8x(x + y)7
Answer: A
Mathematics
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True or false?When using a truth table, the statement q ? p is equivalent to ~p ? ~q.
A. True B. False
Mathematics
Calculate 
.v = 
A. 3
B. 2
C. 20
D. 2
Mathematics
Solve the problem.A rectangle has a length of x + 5 and a width of x - 5 and has an area of 56 square units. Find the length and width of the rectangle. (A = LW)
A. width = 7 units; length = 8 units B. width = 1 unit; length = 56 units C. width = 2 units; length = 28 units D. width = 4 units; length = 14 units
Mathematics
Find an equivalent equation in rectangular coordinates.r = cos ?
A. x2 + y2 = y B. (x + y)2 = x C. (x + y)2 = y D. x2 + y2 = x
Mathematics