Find the second-order partial derivative.Find fxx when f(x, y) = x5y5 - 
x7y7 + 17x - y.
A. 4x3y5 - 6
x5y7
B. 20x4y5 - 42
x6y7
C. 20x3y5 - 42
x5y7
D. 20x3y4 - 42
x5y6
Answer: C
Mathematics
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Use the power rules for exponents to simplify. Write the answer in exponential form.
4
A. 74r4t B. 7r4t4 C. 74rt4 D. 74r4t4
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Evaluate.
÷ 
A. 
B. 
C. 1
D. 
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To what exponent must the base 10 be raised to obtain the given value? Round the answer to four decimal places.4.34
A. 0.6274 B. 0.6375 C. 0.6474 D. 1.4679
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