Let
Substitute into differential equation:
Factor out t^r and solve for 'r':
Substitute into differential equation:
Factor out t^r and solve for 'r':
Anyone know how to do this
2 answers:
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A multiplication is zero if and only if at least one of the factors is zero. So, in this case, the multipications equals zero when
The first equation has no real solutions, because is a square, and thus it's positive. If you add 4 to a positive number, the result can't be zero.
The second equation has the solution
So, globally, the expression equals zero if and only if
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Answer: x=11
Explanation: See below!
I hope this helped!
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- Zack Slocum
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