(1:2)/(2:3)=3:
(1:2)/(2:3)=3:
(2,2)-(-3/2,1/2)=
(x+3):3=(2x-1):2
(-2)-(-3)=-1
y=【(2x+1)(2-3x)^1/3】/(x-3)^2/3求导
(1)1+2+1=4;1+2+3+2+1=_______;1+2+3+4+3+2+1=_______;1+2+3+4+5
(1)(2X-3)^2=5(2x-3) (2)(X+1)^2-2
一道找规律题,1×2+2×3=1×(2×3)/3 +3×(2×3)/3=2×3×4/31×2+2×3=3×4=2×(3×
(1)x-2x-1/3=x-1/2 (2)3x+1/2 - 3x-2/10=2- 2x+3/5
根据1*2=1/3(1*2*3-0*1*2) 2*3=1/3(2*3*4-1*2*3) 计算:1*2+2*3+3*4+·
阅读下列材料:1×2=1/3(1×2×3-0×1×2)2×3=1/3(2×3×4-1×2×3)3×4=1/3(3×4×5
观察下列等式:1^2+(1*2)^2+2^2=(1*2+1)^2,2^2+(2*3)^2+3^2=()