25) Show that the linear transformation T(x, y, z) = (x - 2y, -x+y+z, x+y) is n isomorphism, and find a formula for the inverse transformation T-¹.

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Q: The solution of the exact differential equation (²+y' cos x)de+ (2xy+3y sinx)dy=0 is:

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Q: 8. Find the first 4 non-zero terms of the MacLaurin series for the func- tion: f(x) = √(1-x)².

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