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2 solutions
@Aryan Sanghi , how can I do this?
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See, there is a formula
∫ f ( x ) . g ( x ) d x = f ( x ) ∫ g ( x ) d x − ∫ ( d x d f ( x ) . ∫ g ( x ) d x ) d x
Solve using above formula recursively and you'll get the answer. :)
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Do I really need to study calculus or I can study only basics?
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@Vinayak Srivastava – Even I know just basics.😂 Calculus isn't needed in detail till 1 2 t h . Basics are sufficient.
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@Aryan Sanghi – Ok, so I won't open calculus problems till 12th :)
@Aryan Sanghi – I tried solving one or two steps, then it is repeating and I don't want to do so much work. But thanks for the formula. Maybe(rarely the case, actually) I'll remember it! :)
Reduction formula