Expand, where i2 = -1.(5 + i)4
A. 480 + 776i
B. 776 + 520i
C. 520 + 776i
D. 476 + 480i
Answer: D
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Give an appropriate answer.How are the partial derivatives ?f/?x and ?f/?y of a function f(x,y) defined? How are they interpreted and calculated?
What will be an ideal response?
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = 2x + 4, [0, 2], left-hand endpoint
A. 
B. 
C. 
D. 
Name the place held by the specified digit in the given number.4 in the number 189,247
A. thousands B. ones C. hundreds D. tens
Use a reciprocal identity to find the indicated trigonometric function of ?.cot ? if tan ? = - 
A. 
B. 
C. - 
D. - 