Mathematics, 06.07.2021 19:40 deb69
A. Verify that y1=e^x and y2=xe^x are solutions of y"-2y'-y=0 on (-infinity, infinity)
b. Verify that if c1 and c2 are arbitrary constants then y=e^x(c1+c2x) is a solution of A on (-infinity, infinity)
c. Solve the initial value problem y"-2y'-y=0 y(0)=y y'(0)=4
s. Solve the initial value problem y"-2y'-y=0 y(0)=k0 y'(0)=k1
Answers: 1
Mathematics, 21.06.2019 17:00
16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191
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Mathematics, 21.06.2019 18:00
Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}
Answers: 1
Mathematics, 21.06.2019 21:30
An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution
Answers: 2
A. Verify that y1=e^x and y2=xe^x are solutions of y"-2y'-y=0 on (-infinity, infinity)
b. Verify th...
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