# Given that x^2 + y^2 = 13 and xy = 3, calculate the value of (x+y)^2?

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Be sure to use the product rule on the product of xy. d/dx [y] = dy/dx 2x + 8y (dy/dx) = 3(x (dy/dx ... x,y,z满足x^2-3xy+4y^2-z ... for "Given the curve x^2+4y^2=7 ... - Read more

... (x,y)-plane 3.1. ... Solve for y giving y2 = x 2−1, so that y = ± √ x −1. Can you plot this? (b) ... y = 3+7t is a line, and nd its slope. 13. We eliminate ... - Read more

## Given that x^2 + y^2 = 13 and xy = 3, calculate the value of (x+y)^2? resources

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