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#1 2021-05-04 15:39:50
- mathland
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- Registered: 2021-03-25
- Posts: 444
Show y" + y = 0
If y = A sin t + B cost, where A and B are constants,
show that y"+ y = 0.
Must I find the first and second derivative of y and then add to
A sin (t) + B cos(t)?
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#3 2021-05-04 23:44:26
- mathland
- Member
- Registered: 2021-03-25
- Posts: 444
Re: Show y" + y = 0
zetafunc wrote:
Yes, you need to find the second derivative and then add that to y.
Very good. I get emotional with correct about a question I've never seen before.
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