Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = 
between x = 4 and x = 8 using a lower sum with two rectangles of equal width.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Use the addition formulas to derive the identity.sin 
= -cos x
What will be an ideal response?
Mathematics
Rewrite the fraction with the indicated denominator.
= 
A. 
B. 
C. 
D. 
Mathematics
For the given matrix A, find a basis for the corresponding eigenspace for the given eigenvalue.A = 
, ? = -4
A. 
B. 
C. 
D. 
Mathematics
Perform the operation and write the result in the standard form.(-4 - 5i) - (6 - i)
A. -10 - 4i B. -10 + 4i C. -10 - 5i D. 10 + 4i
Mathematics