D = 8cm H=8cm - Gauthmath

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Question

The quadratic function y=x^2-13x+36 is drawn below. Use the symmetry of the quadratic curve to find the coordinates of the minimum. ZoomSHOW LESS92

Solution

user avatar imageAnswer : (6.5,-6.25)Analysis:  According to the picture y_A=y_B=0 So when xis in the middle  of AB, yis the smallest. AB=x_B-x_A=9-4 =5 x_C-x_A= 1/2 · AB x_C= 1/2 * 5+4 r_c=6.5 y=x^2-13x+36=(6.5)^2-13* 6.5+36 =42.25-84.5+36 =-6.25 C(1.5,-6.25)SHOW LESSClick to rate:92.4(456 votes)Search questionBy textBy image/screenshotDrop your file here orClick Hereto upload

Từ khóa » D=8 Cm H=8cm