?Compare dy and ?y for 
at ?x? = 1 with dx = -0.01. Give your answers to four decimal places.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Find the limit.
sec2 x - tan2 y + z
A. 2 B. 10 C. 3 D. 11
Mathematics
Solve using Cramer's rule. 4x - 6y + 6z = 40-5x + 5y - 7z = -59 9x - 5y - 9z = -25
A. (8, 3, 7) B. (7, -5, -7) C. (5, 7, 5) D. (7, 5, 7)
Mathematics
Find a polynomial function with real coefficients that has the given zeros. ? 1, 3i ?
A. x3 - x2 - 9x - 9 B. x3 + x2 + 9x - 9 C. x3 - x2+ 9x- 9 D. x3 + x2 + 9x + 9 E. x3 - x2 + 9x + 9
Mathematics
Solve by making a u-substitution.x4 - 21x2 + 20 = 0
A. {±1, ±2
}
B. {±2, ±2}
C. {±1, ±2
}
D. {±1, ±
}
Mathematics