Cho tam giác ABC có góc B =90°, AM là tia phân giác của góc A (M thuộc BC). Trên tia AC lấy điểm D sao cho AB=AD a) CM tam giác ABM=tam giác ADM
b) CM MD vuông góc AC
c) CM AM là đg trung trực của BD
d) kẻ BH vuông góc vs AC( H thuộc AC). So sánh DH và DC

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d