Q1 solve the equation graphically by converting it to an equivalent equation with 0 on the right-hand side and then finding the x-intercepts. x^2 = |x| (x+1)^(-1) = x^(-1)+x（告诉我怎么画图就好）Q2 solving graphically, find all real solutions to the following equations, watch out for hidden behavior. y = 10x^3 + 7.5x^2 - 54.85x = 37.95 

去美国的孩子果然..

真囧……原来外国美国会使数学能力退化……第一题，描点吧！～第二题，配方吧！～

你真逗。。。描点要描到那年去。。。。 你画一个，然后把图帖上来。。。y = 10x^3 + 7.5x^2 - 54.85x + 37.95抱歉打错了。。。。

那就求导看趋势好了，具体看书呗，你不是学微积分预备呢嘛？

Q1, equation with one unknown, just figure X out and draw it on the XY-graph.Q2, it should be y = 10x^3 + 7.5x^2 - 54.85x = 37.95. otherwise, the question just makes non-sense. it tells you to solve the equation graphically, so draw the line out (it would be a lots eaier if you have graph calculator) and plug in the Y=37.95.

i have graph calculater, but sometime, like quiz and exam, we can not use that. 所以我想知道一些技巧

难道考试会有这种东西？而且描点也不过是描特殊点而已，用导数看一下转折点，然后注意一下，描出来，剩下的凭感觉画不就可以了。

LZ是在高中吧？认识一下，在哪上啊？马甲穿上和你说。考试不会出像Q2这样的题的，否则必让使计算器。

monta vista high school