xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2

limancheng2022-10-04 11:39:541条回答

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YBJRSBX-ZH 共回答了15个问题 | 采纳率86.7%: xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
=xy-2xy+2[3x^2y-(4xy^2+0.5xy)]-8x^2y+6xy^2
=-xy+6x^2y-2(4xy^2+0.5xy)-8x^2y+6xy^2
=-xy-2x^2y-8xy^2-xy+6xy^2
=-2xy-2x^2y-2xy^2; 1年前

一些列的题目.consider the function f(x,y)=2x^3 +6xy^2 -3y^3 -150x 一些列的题目.consider the function f(x,y)=2x^3 +6xy^2 -3y^3 -150x consider the function f(x,y)=2x^3 +6xy^2 -3y^3 -150x （1）provide appropriate plots of the function f that illustrate its shape. (2) Find all stationary points of f and classify them as minima,maxima and saddle points using separately the discriminant criterion and the eigenvalues of the Hessian. (3)Plot the gradient of f alongside a contour plot. (4)Set up and solve an appropriate differential equation to find the maxima of f(x,y) numerically. 不一定要全做啦.多多益善. - 额、好歹回答的人做几个题目嘛- 7609867831591年前2: kkwyp 共回答了23个问题 | 采纳率91.3%

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