11Na 12Mg 13Al 14Si 15P 16S 17Cl 18Ar 19K 20Ca 21Sc 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga 32Ge 33As 34Se 35Br 36Kr 37Rb 38Sr 39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe 55Cs 56Ba 57-71La-Lu 72Hf...
1)两方程相减得:2x+2y-14=-10即x+y-2=0此即为公共弦所在直线的方程.2)圆心为以下方程组的x+y-2=0x+2y-3=0解得:x=1,y=1 ,即圆心为(1,1)求两圆交点:将y=2-x代入x^2+y^2=10,得:2x^2-4x+4=10 ,得x=3,-1,即交点为(3,-1),(-1,3)半径即为交点到圆心的距离:r^2=(1-3)^2...