Determine the interval of convergence of the power series.
A. (-?, ?)
B. 
C. (-5, 5)
D. (-6, 4)
Answer: C
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Solve the initial value problem.Differential Equation: 
= (-cos t)i + (4t3+ 8)jInitial Condition: r(0) = 4j
A. r(t) = (sin t)i + (12t2 + 4)j B. r(t) = (-sin t)i + (t4+ 8t + 4)j C. r(t) = (-sin t)i + (t4 + 4)j D. r(t) = (-sin t)i + (t4)j
Write the passage in the form of an argument using the following simple statements:p: The "diamond" is a fake.q: Peter will be unhappy for weeks.The argument's conclusion should be: The diamond must not have been a fake.Determine if the argument is valid or invalid.Peter bought a "diamond" from a street vendor. I was sure it was a fake and that it would make Peter miserable for weeks. But I saw him a few days later. He had got the "diamond" appraised and looked quite happy.......
A. p ? q ~ q ---- ? ~ p The argument is valid. B. p ? q ~ q ---- ? ~ p The argument is invalid. C. p ? q ~ q ---- ? ~ p The argument is valid. D. p ? q ~ q ---- ? p The argument is invalid.
Sketch the angle in standard position.- 
A. 
B. 
Represent the quantity by a signed number.The price of a gallon of gas dropped 15¢ in one day.
A. +15 B. -15