write the equation of the tangent line to f(x)=x+x×x that is
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/18 02:13:46
write the equation of the tangent line to f(x)=x+x×x that is parallel toy=-6x=1
那个是Y=-6X+1 这个好象用到F(X)=F'(X) 这些东西把 然后平行所以有相同的SLOPE=-6
那个是Y=-6X+1 这个好象用到F(X)=F'(X) 这些东西把 然后平行所以有相同的SLOPE=-6
求f(x)=x^2+x平行于y=-6x的切线?还是y=-6x=1的切线?
若是y=-6x=1则y=1,x=-1/6这是一个点无法平行.
若是y=-6x,则可设所求为y=-6x+b
x^2+x=-6x+b
x^2+7x-b=0
(德尔塔)=49+4b=0
b=-49/4
所求方程为y=-6x-49/4
补充:如果y=-6x+1同样道理可以得到答案同上.由于f(x)是二次函数,其性质比较明确,所以不需要用导数的知识.当然用导数的知识自然也可以解.
若是y=-6x=1则y=1,x=-1/6这是一个点无法平行.
若是y=-6x,则可设所求为y=-6x+b
x^2+x=-6x+b
x^2+7x-b=0
(德尔塔)=49+4b=0
b=-49/4
所求方程为y=-6x-49/4
补充:如果y=-6x+1同样道理可以得到答案同上.由于f(x)是二次函数,其性质比较明确,所以不需要用导数的知识.当然用导数的知识自然也可以解.
write the equation of the tangent line to f(x)=x+x×x that is
Find the equation of line tangent to the graph of f(x)=e+ln
an equation of the line tangent to the graph of f(x)=x(1-2x)
Find the equation of the tangent line at x=2 for f(x)=√((4x+
Find an equation of the line tangent to the graph of 4/x^4 a
1.Find the equation of the tangent to the curve y=x^2,which
英文的导数题Let f(x)=8x+20/(x^2).Then the equation of the tangent
tangent line For what values of a and b is the line 4x+y=b t
英语翻译Given is the function f(x)=ln2(x-4)Find the equation of
Find the gradient of the tangent to the curve y=(3x-2)(x+4)
一道英文数学题求救!a tangent line to the eclipse x^2+4y^2=5 has an x-
Find an equation of the tangent line to the graph of the fun