Can sum1 help me with this DE question please

cacmay said:
2d^2x/dt^2+15dx/dt+140x=4sin10t x(0)=0, x'(0)=0
Click to expand...

\(\displaystyle 2\frac{d^2x}{dt^2} + 15\frac{dx}{dt} + 140x = 4sin(10t)\)

Above is a straightforward 2nd order ODE with Initial values.

There must be several worked out examples in your text book. First find the homogeneous solution - then find the particular solution then solve for the constants.

Where are you stuck...

Please show us your work, indicating exactly where you are stuck - so that we know where to begin to help you.
 
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