Solve the problem.(n - 1)! =
A. 
B. n! - 1!
C. n × (n - 1)!
D. 
E. none of these
Answer: D
Mathematics
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Write the first four terms of the binomial expansion.(x + 4)20
A. x20 + 3040x19 + 3040x18 + 145,920x17 B. x20 + 80x19 + 3040x18 + 18,240x17 C. x20 + 760x19 + 3040x18 + 72,960x17 D. x20 + 80x19 + 3040x18 + 72,960x17
Mathematics
Subtract.0 - 30
A. 0 B. 30 C. -30 D. not possible
Mathematics
Consider the function 
. (a) Find the intervals on which f is increasing or decreasing. (b) Find the relative maxima and relative minima of f.
What will be an ideal response?
Mathematics
Find the value of the indicated trigonometric function for an acute angle ? in a right triangle.tan ? = 
Find cot ?.
A. 
B. 
C. 
D. 
Mathematics