(x+t )(x-6)-(x-2)(x+1)(x^3+2)^2-(x^3-2)^2-2(x+2)(x-2)(x^2+4)，其中x=1/2

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(x+t)(x-6)-(x-2)(x+1)(x^3+2)^2-(x^3-2)^2-2(x+2)(x-2)(x^2+4)，其中x=1/2(x+t)(x-6)-(x-2)(x+1)(x^3+2)^2-(x

(x+t )(x-6)-(x-2)(x+1)(x^3+2)^2-(x^3-2)^2-2(x+2)(x-2)(x^2+4)，其中x=1/2
(x+t )(x-6)-(x-2)(x+1)
(x^3+2)^2-(x^3-2)^2-2(x+2)(x-2)(x^2+4)，其中x=1/2

(x+t )(x-6)-(x-2)(x+1)(x^3+2)^2-(x^3-2)^2-2(x+2)(x-2)(x^2+4)，其中x=1/2
(x^3+2)^2-(x^3-2)^2-2(x+2)(x-2)(x^2+4)
= x^6 + 4x^3 + 4 - ( x^6 - 4x^3 + 4) - 2(x^2 - 4)(x^2 + 4)
= x^6 + 4x^3 + 4 - x^6 + 4x^3 - 4 - 2(x^4 - 16)
= 8x^3 - 2x^4 + 32
= - 2x^4 + 8x^3 + 32
当x = 1/2时,
原式= -2×(1/2)^4 + 8×(1/2)^3 + 32
= - 1/8 + 1 + 32
= 32又7/8

*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x) 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x matlab中函数句柄应用问题?F=@(x)[x(1)+t*x(3)+0.5*t^2*x(5);x(2)+t*x(4)+0.5*t^2*x(6);...x(3)+t*x(5);x(4)+t*x(6);x(5);x(6)];H=@(x)[sqrt(x(1)^2+x(2)^2);atan(x(2)/x(1))];Xk=zeros(6,50);Xk_predict=@(x)F*XO;Pk_predict=@(x)F*PO*F'+Q;%预测误差协 x-x^2/6 x-x^2/6 t-2=根号x,求x 约分：1、x*x-9/6-2x 2、x*x-1/x-x*x x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, (x+3x+5x...+2009x)-(2x+4x+6x+...+2010x) lim（1+2t/x）^3x=e^6t x->无穷求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X x/x-3-5x/x^2-x-6计算 x^6-x^5+x^4-x^2+x-1 lim(x+t/x-t)∧x x→无穷大（∫（0到x）t*e^t*sint dt）/x^6*e^x,求极限,x趋于0这样做对吗?=2x*x^2*e^(x^2)*sinx^2/6x^5*e^x+x^6*e^x=2x^5*e^(x^2)/e^x(6x^5+x^6)=2x^5{(e^(x^2)-1) +1}/{(e^x-1)+1}(6x^5+x^6)=2x^5(x^2+1)/(x+1)(6x^5+x^6)=2x^7+2x^5/7x^6+x^7+6x^5由于x趋于计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6