Solve. Express any nonreal complex numbers with i notation.x4 - 31x2 - 180 = 0
A. x = -36, 5
B. x = ± 6, ± i
C. x = 6, i
D. x = ±
, ± 6i
Answer: B
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Find the potential function f for the field F.F = (y - z)i + (x + 2y - z)j - (x + y)k
A. f(x, y, z) = xy + y2 - xz - yz + C B. f(x, y, z) = xy + y2 - x - y + C C. f(x, y, z) = x(y + y2) - xz - yz + C D. f(x, y, z) = x + y2 - xz - yz + C
Approximate the number using a calculator. Round your answer to three decimal places.2-1.3
A. 0.406 B. 0.706 C. 1.690 D. -2.600
Solve the problem.List all the ordered arrangements of 6 objects a, b, c, d, e, and f choosing 2 at a time without repetition. What is P(6, 2)?
A. ab, ac, ad, ae, af, ba, bc, bd, be, bf, ca, cb, cd, ce, cf, da, db, dc, de, df, ea, eb, ec, ed, ef, fa, fb, fc, fd, fe P(6, 2) = 30 B. ab, ac, ad, ae, af, ba, bc, bd, be, bf, ca, cb, cd, ce, cf, da, db, dc, de, df, ea, eb, ec, ed, ef P(6, 2) = 25 C. ab, ac, ad, ae, af, bc, bd, be, bf, cd, ce, cf, de, df, ef P(6, 2) = 15 D. aa, ab, ac, ad, ae, af, ba, bb, bc, bd, be, bf, ca, cb, cc, cd, ce, cf, da, db, dc, dd, de, df, ea, eb, ec, ed, ee, ef, fa, fb, fc, fd, fe, ff P(6, 2) = 36
Find the inclination ? (in degrees) of the line with a slope of m. Round your answer to one decimal places.
?
?
A. 
B. 
C. ?
D. 
E. 