Find the second-order partial derivative.Find fxx when f(x,y) = 8x3y - 7y2 + 2x.
A. -14
B. -28
C. 48xy
D. 24x2
Answer: C
Mathematics
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Evaluate the expression for the given replacement values.x - y + z for x = 18, y = 8, z = 5
A. 5 B. 31 C. 15 D. 16
Mathematics
Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 + 
x + 
= 0
A. ±3 B. ±0.333 C. 0.333 D. -0.333
Mathematics
Find the product.
A. 355,514 B. 355,534 C. 355,624 D. 355,524
Mathematics
Perform the indicated operation. Write the result in standard form.6i + (-9 - i)
A. 9 - 7i B. -9 + 5i C. -9 + 7i D. 9 - 5i
Mathematics