朋友在美上大学,要交数学PROJECT,请大N帮帮忙1

１）if a rectangle has its base on the x-axis and two verices on the curve Y=e^(-x^2),show that the rectangle has the largest possible area when the

two verices are at the points of inflection of the curve.

2) Find the highest and lowest points on the curve X^2+XY+Y^2=12

3)find the point on the parabola Y=1-X^2 at which the tangent line cuts

from the first quadrant the triangle with the smallest Area.

谢谢大家!

大家都没回音啊.请NN们抽空看下吧.我朋友靠这个过那门课了.谢谢

考完了的大N麻烦帮忙看下好了~

我们这些待考的小菜菜~一边玩去了~

小e都出来了,高等数学!

额闪!