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  • the normal to the curve 2y=3x^3-7x^2+4x,at the points O(0,0)and A(1,0),meet at the point N

    the normal to the curve 2y=3x^3-7x^2+4x,at the points O(0,0)and A(1,0),meet at the point N
    find the coordinates of N calculate the area of triangle OAN
    英語人氣:293 ℃時間:2020-04-04 16:52:22
    優(yōu)質解答
    point N is(1/5,2/5) the area is 1/5
    according to the normal at the points O(0,0) and A(0,1),we can get two line,they are y=2x and y=-1/2(x-1),thus,we can get x=1/5,y=2/5,this is point N,so the area=1/2*2/5=1/5
    OR you can tell your teacher :i am chinese,this is so easy,N is(1/5,2/5) the area is 1/5題目什么意思 normal怎么用normal是法線
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