Find the second-order partial derivative.Find fxx when f(x, y) = x2 + y - ex+y.
A. 2 - y2ex+y
B. 1 - ex+y
C. 2 + ex+y
D. 2 - ex+y
Answer: D
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Identify the digit with the given place value.514,763thousands
A. 0.004 B. 4000 C. 5 D. 4
Use the elimination method to solve the system. x + 8y = 653x + 8y = 67
A. (2, 7) B. (-8, 1) C. No solution D. (1, 8)
Find the indicated roots. Write the answer in trigonometric form.Fifth roots of 243(cos 240° + i sin 240°)
A. 3(cos 48° + i sin 48°), 3(cos 138° + i sin 138°), 3(cos 228° + i sin 228°), 3(cos 318° + i sin 318°), 
B. 3(cos 48° + i sin 48°), 3(cos 120° + i sin 120°), 3(cos 192° + i sin 192°), 3(cos 264° + i sin 264°), 
C. 3(cos 240° + i sin 240°), 3(cos 330° + i sin 330°), 3(cos 420° + i sin 420°), 3(cos 510° + i sin 510°), 
D. 3(cos 240° + i sin 240°), 3(cos 312° + i sin 312°), 3(cos 384° + i sin 384°), 3(cos 456° + i sin 456°), 
Find the composite function for the given functions.f ? g for f(x) = 2x + 5 and g(x) = -5x + 7
A. 10x + 19 B. -10x + 19 C. -10x D. -10x + 32