Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 1 and x = 5 using an upper sum with four rectangles of equal width.
A. 54
B. 30
C. 69
D. 41
Answer: A
Mathematics
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Write the complex number in the form a + bi.
(cos 315° + i sin 315°)
A. 
- i
B. 
- 
i
C. 
- 
i
D. 
- i
Mathematics
Find the area or volume.Find the area of the region in the first quadrant between the curve y = e-6x and the x-axis.
A. 1
B. 
e
C. 
D. 6
Mathematics
A function of x is depicted in the graph. Find any input values that produce the indicated output.f(x) = -4
A. {x| -4 < x < -3} B. {x| -4 < x ? -3} C. {x| -4 ? x ? -3} D. -3
Mathematics
Determine whether the statement is true or false. If it is true, explain why it is true. If it is false, give an example to show why it is false.
?
If 
is increasing on 
, then 
for each 
in .
?
A. False. For example, 
increasing on any 
but 
B. True. This follows from the definition.
C. False. For example,
increasing on 
but
Mathematics