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 5 Engineering Mathematics and Mathematical Physics Books 4 Time and Work. How much work does C do per hour? 4 Percentage question on voting 4 Find the integrating factor of $(x^2y-2xy^2)\,dx+(x^3-3x^2y)\,dy=0$ 4 Is a function continuous at the point where it ends abruptly?

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 +5 Is a function continuous at the point where it ends abruptly? +5 Percentage question on voting +5 Why is Pr(A | (B and C)) = Pr(A | C) if A and B are independent? +5 If $x=2\cos t-\cos 2t$, $y=2\sin t -\sin 2t$, find the value of $\frac{d^2y}{dx^2}$ when $t= \pi /2$

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