Find the power series representation for f(x).f(x) = 
A. x + x2 + 
- 
+ . . .
B. x - x2 - 
+ 
+ . . .
C. 1 - x - 
+ 
+ . . .
D. 1 + x + 
- 
+ . . .
Answer: A
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A cardiac monitor is used to measure the heart rate of a patient after surgery. It compiles the number of heartbeats after t minutes. When the data in the table are graphed, the slope of the tangent line represents the heart rate in beats per minute. The monitor estimates this value by calculating the slope of a secant line. Use the data to estimate the patient's heart rate after 42 minutes using the secant line between the points with t= 38 and t = 42.
a. 74
b. 80
c. 85
d. 70
e. 76
f. 75
Use the distributive property to rewrite the sum or difference as a product. Simplify the answer if possible.3c - 8c
A. -5c B. -11c C. -24c D. 11c
Find the real solutions, if any, of the equation. Use the quadratic formula.8x2 - x + 4 = 0
A. 
B. no real solution
C. 
D. 
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.?
A. real, complex B. complex, nonreal complex C. pure imaginary D. complex, pure imaginary