Use differentiation to determine whether the integral formula is correct.
dx = -4 cot 
+ C
A. No
B. Yes
Answer: A
Mathematics
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Tell whether the graph opens upward or downward and whether the graph is wider, narrower, or the same as f(x) = x2.f(x) = x2 + 12
A. Downward, same B. Upward, same C. Upward, wider D. Upward, narrower
Mathematics
Solve. Use a calculator to approximate the irrational solutions to three places.x2 + 1 = 13
A. ±3.742 B. 2.606, -4.606 C. ±3.464 D. 2.606
Mathematics
The bar graph shows the number of new residents in several towns during the years 1999 to 2001. Use the graph to answer the question. 
What was the total number of new residents in Birton during the years 1999 to 2001?
A. 382 B. 417 C. 330 D. 282
Mathematics
Provide an appropriate response.The billing cycle of an open-end credit account is always 30 or 31 days.
A. True B. False
Mathematics