f(x) = x³ - 2x² - 24x
x³ - 2x² - 24x = 0
x(x² - 2x - 24) = 0
x = 0
x² - 2x - 24 = 0
a = 1, b = -2, c = -24
Delta = (-2)² - 4 * 1 * (-24) = 4 + 96 = 100
x = (-(-2) - 10)/(2 * 1) = -8/2 = -4
x = (-(-2) + 10)/(2 * 1) = 12/2 = 6
Answer: 2)
Answer:
C. Cos(60°) = Sin(30°)
Step-by-step explanation:
Cos(60°) = 0.5
Sin(30°) = 0.5
Given is a fundamental solution, we posit a second solution of the form , with derivatives
Substitute these into the ODE:
Integrate both sides twice to get
Then the second fundamental solution is
but already cover , so .
58 1/3 / 6 2/3
175/3 / 20/3
175/3 x 3/20
525/60
8 3/4