Mathematics, 17.04.2020 02:14 Lucid4465
For second order DEs, the roots of the characteristic equation may be real or complex. If the roots are real, the complementary solution is the weighted sum of real exponentials. Use C1 and C2 for the weights, where C1 is associated with the root with smaller magnitude. If the roots are complex, the complementary solution is the weighted sum of complex conjugate exponentials, which can be written as a constant times a decaying exponential times a cosine with phase. Use C1 for the constant and Phi for the phase. All numerical angles(phases) should be given in radian angles (not degrees). Given the differential equation y" + 7y' + 12y = 7cos(6t + 0)u(t). a. Find the functional form of the complementary solution, y_c(t). b. Find the particular solution, y_p(t). c. Find the total solution, y(t) for the initial condition y(0) = 1 and y'(0) = 12.
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Mathematics, 21.06.2019 18:40
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
Mathematics, 21.06.2019 21:50
Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()
Answers: 1
Mathematics, 22.06.2019 03:00
Edith is shopping for a new leather couch. jordan’s furniture has one that costs $3,000. however, this weekend she can get a 15% discount. how much money will edith save if she buys the couch this weekend? a $15b $2,550c $45,000d $450
Answers: 1
For second order DEs, the roots of the characteristic equation may be real or complex. If the roots...
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