Find the domain of the vector-valued function.r(t) = 
i + 
j + ln 
k
A. {t ? ?: t < 7}
B. {t ? ?: t ? 8}
C. {t ? ?: t ? 7}
D. {t ? ?: t ? -7}
Answer: C
Mathematics
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Shade the regions representing the set.(A ? B ? C')' 
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality and express the solution set in interval notation. Graph the solution set on the real number line.9 > x + 3
A. x > 6; (6, ?)
B. x ? 6; (-?, 6]
C. x < 6; (-?, 6)
D. x ? 6; [6, ?)
Mathematics
Use the unit circle and any appropriate relationship among the trigonometric functions to find the value.
csc 
A. - 
B. - 
C. - 
D. - 
Mathematics
Solve the problem.If tan ? = x + 1 and tan ? = x - 1, show that cot(? + ?) = 
What will be an ideal response?
Mathematics