Find the simplest form of a second-order homogeneous linear differential equation that has the given solution.y = c1 cos 2x + c2 sin 2x
A. D2y + 4Dy + 4y = 0
B. D2y + 4y = 0
C. D2y - 4y = 0
D. D2y - 4Dy + 4y = 0
Answer: B
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Express the number in scientific notation.428.2
A. 4.282 x 10-3 B. 4.282 x 103 C. 4.282 x 102 D. 4.282 x 10-2
The abacus in the figure has "five" playing the role of "ten." (a) What number is represented on this five-bead abacus? (b) How would this number naturally be recorded?
A. (a) 67, (b) 232 B. (a) 335, (b) 2320 C. (a) 62, (b) 132 D. (a) 37, (b) 72
Evaluate the expression.(0.8) 2
A. 1.6 B. 0.64 C. 6.4 D. 0.064
Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results.b = 3, c = 4, B = 80°
A. one triangle B = 40°, A = 60°, a = 7 B. one triangle C = 41°, A = 59°, a = 11 C. one triangle C = 39°, A = 61°, a = 9 D. no triangle