Compute the gradient of the function at the given point.
A. 
i - 
j
B. - 
i - 
j
C. - 
i + 
j
D. - 
i + 
j
Answer: D
Mathematics
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Find the length of the curve with the given vector equation.r(t) = 4
t3/2i + (6t sin t)j + (6t cos t)k ; -4 ? t ? 7
A. 213 B. 408 C. 165 D. 264
Mathematics
Write the number in scientific notation.0.00006402
A. 6.402 × 10-5 B. 6.402 × 105 C. 6.402 × 10-4 D. 6.402 × 104
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Solve the problem.The function 
can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be present after 
A. 272.99 mg B. 1.35 mg C. 3.22 mg D. 0.09 mg
Mathematics
Calculate and write the result as a decimal.124.23 × 1
+ 31.21 × 
A. 210.9725 B. 59.565 C. 69.8165 D. 214.8525
Mathematics