2.6X-1.7X+0.3=3
2.6X-1.7X+0.3=3
f(x)=5x^5+2x^4+3.5x^3-2.6x^2+1.7x-0.8,用秦九韶法计算多项式当x=5时
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
13.2X+9X=33.3 8X-3X=105 5.4X+X=12.8 X-0.3
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
1.7x+3=5-0.3x
3x一1.5X+0.3x=12.6
x-20分之3x=1.7
5(x-1.7)/(x+0.9)=3
3x+7x+2.6=74
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?