emrearslan100
emrearslan100 emrearslan100
  • 16-05-2017
  • Mathematics
contestada

y'=36y+72

find general solution to the equation.

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LammettHash
LammettHash LammettHash
  • 16-05-2017
[tex]y'=36y+72[/tex]
[tex]y'-36y=72[/tex]
[tex]e^{-36t}y'-36e^{-36t}y=72e^{-36t}[/tex]
[tex]\dfrac{\mathrm d}{\mathrm dt}[e^{-36t}y]=72e^{-36t}[/tex]
[tex]e^{-36t}y=72\displaystyle\int e^{-36t}\,\mathrm dt[/tex]
[tex]e^{-36t}y=-2e^{-36t}+C[/tex]
[tex]y=-2+Ce^{36t}[/tex]
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