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A: Answer A: f(x) = x3+ 4.5x2-12 x- 2  f'(x) = 3x2 + 9 x -12  f"(x) = 6 x + 9f"(x) = 0 = 6x + 9x =-32Co...

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A: Please refer to the image below

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A: Topic:- differential equations

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Q: the ratio test to determine whether the series converges. If the test is inconclusive, then say so. ...

A: Please refer to the image below 

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Q: (x- 2y)dx + (2x + y)dy=0 b. y(Inx)(Iny)dx+dy=0 c. 2xy dx +(y? +x² )dy=0 d. (cosxcosy- cotx)dx-sinx s...

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Q: 19. The solution to (2x – 4y – 3)dy = (x – 2y)dx is: a. 6y – x? – 4xy + 4y? = c b. 6y +x? - 4xy - 4y...

A: Let x-2y=v  According to guidelines we solve only first question.  So, please again upload 20th ques...

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A: