if r=e^t(c cos2t+d sin 2t) where c and d constent vectors then show that d^2r/dt^2-2dr/dt+5r=0
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correct answer is
1-root2
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Answer:
3x^2+4x-4 factorize
jif r=e^t(c cos2t+d sin 2t) where c and d constent vectors then show that d^2r/dt^2-2dr/dt+5r=0
2+3=t
=(4x^ + 5x - 10) ÷ (x + 3)
(4x^ + 5x - 10) ÷ (x + 3)
":(4x^ + 5x - 10) ÷ (x - 3)
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