find general solution of x^4y^iv+6x^3y^"'+2x^2y^"-4xy^'+4y=6x^3sinx
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10.When Arpita invests a certain sum of money, she observes that the CI for the second year is Rs. 1380 and for the third year is Rs. 1587, when it is compounded yearly. Calculate the rate of interest and the sum of money invested.
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