Taken from the field of statistics, logistic regression is an effective model for binary situations. Logistic regression is based on the logistic function, which is an S-curve equation often used for calculating probability. In the case of AI modeling, logistic regression determines probability and ...
6 A curve has equation y=kx2+ 1 and a line has equation y= kx, where k is a non-zero constant.(i) Find the set of values of k for which the curve and the line have no common points.[3] (ii) State the value of k for which the line is a tangent to the curve and,...
2 The equation of a curve is y = x2 - 6x+ k, where k is a constant.(i)Find the set of values of k for which the whole of the curve lies above the x-axis.[2] (ii) Find the value of k for which the line y + 2x = 7 is a tangent to the curve.[3] ...
第一道the curve with equation y^2=x^3+3x^2 is called the Tschirnhausen cubic.,find an equation of the tangent line to this curve at point (1,-2).还有个微分的题SinX+CosY = sinXcosY 答案 先求导隐函数求导两边对x求导2y*y'=3x^2+6xy'=(3x^2+6x)/(2y)所以代入x=1,y=-2y'=(3...
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A curve is given by the equatio y=(x-2)/(2x+1)wheex≠-1/2 () Explain why the curve is defined for all values of.x excep x=-1/2田 (ii) Explain, with working, why the curve has no stationary point.[2] (ii) The curve crosses the x-axis at point P. The normal to t...
The curve with equation y2 = x3 +3x2 is called the Tschirnhausen cubic.Find an equation of the tangent line to this curve at the point (1,−2).tschirnhausen cubic我不知道是什麽意思,就是要找这个曲线方程的正切相交得点.不会怎麼解这种题,明天要用到,...
What is the equation of the normal to the curve y = sin x at (0, 0)?(a)x =0 (b) y=0 (c)x+y =0 (d)x-y=0 Dear StudentGiven that, y = sin xHence, dy/dx = cos xThus
1一道曲线方程的题,麻烦帮解答下,The curve with equation y2 = x3 +3x2 is called the Tschirnhausen cubic.Find an equation of the tangent line to this curve at the point (1,−2).tschirnhausen cubic我不知道是什麽意思,就是要找这个曲线方程的正切相交得点.不会怎麼解这种题,明天要用到, ...
If y = f(x) is a curve and if there exists two points A(x1, f(x1)) and B (x2,f(x2)) on it such that f'(x1) = -1/( f(x2)), then the tangent at x1 is normal at