aX5=bX3则aOb怎么写?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/13 13:39:53
这个可以先以∠1的顶点为圆心,做一个圆,此时∠1的两条边与圆周会有两个交点,以这两个交点的距离为单位,以某一交点为起点,连续的在圆周上截出八段弦及可,八段弦所对应的圆心角即为8∠1!
∵f(x)=ax5+lnx有垂直与y轴的切线,∴f(x)函数在某一个点处的导数等于零.由函数的表达式可知f(x)的定义域为x>0∵f′(x)=5ax4+1x,根据上面的推断,即方程5ax4+1x=0有
解法一:∵(3x+1)5=ax5+bx4+cx3+dx2+ex+f,∴(3x+1)5=243x5+405x4+270x3+90x2+15x+1,∴a-b+c-d+e-f=243-405+270-90+
∵(3x+1)4=(9x2+6x+1)2=81x4+108x3+54x2+12x+1,(3x+1)4=ax4+bx3+cx2+dx+e,∴81x4+108x3+54x2+12x+1=ax4+bx3+c
由题意可知,当x=-2时,y=ax5+bx3+cx-1,得y+1=ax5+bx3+cx,即ax5+bx3+cx=6,∴当x=-2时,ax5+bx3+cx=6,∴当x=2时,y=ax5+bx3+cx-1
∵2ax4+5ax3-13x2-x4+2021+2x+bx3-bx4-13x3=(2a-b-1)x4+(5a-13+b)x3-13x2+2x+2021,又∵此多项式为二次多项式,∴2a−b−1=05a
∵f(x)=ax5+bx3+cx+8∴f(-2)=-32a-8b-2c+8=10,∴32a+8b+2c=-2则f(2)=32a+8b+2c+8=-2+8=6故选C
(1)x=0时,d=M=-5;(2)x=-3时,ax5+bx3+cx+d=-243a-27b-3c-5=7,解得-243a-27b-3c=12,x=3时,ax5+bx3+cx+d=243a+27b+3
∵x=1时,ax5+bx3+cx=a+b+c=5,∴x=-1时,ax5+bx3+cx=-a-b-c=-5.故选A.
把x=-1代入代数式得:-a+b-c-6=17,∴a-b+c-6=-29,∵x=1时,x5=x3=x=1,∴a-b+c-6=ax5-bx3+cx-6=-29,即当x=1时,这个代数式的值为-29.故答
奇函数,因为g(0)=0,而g(-x)=-ax3-bx3-cx=-(ax3+bx3+cx)=-g(x)
∵当x=-1时,多项式的值为17,∴ax5+bx3+cx+9=17,即a•(-1)5+b•(-1)3+c•(-1)+9=17,整理得a+b+c=-8,当x=1时,ax5+bx3+cx+9=a•15+b
∵(3x+1)5=ax5+bx4+cx3+dx2+ex+f当x=-1时,有(-2)5=-a+b-c+d-e+f=-32,∴a-b+c-d+e-f=32,故选A.
x=2时,ax5+bx3+cx-5=a×25+b×23+2c-5=7,∴32a+8b+2c=12,当x=-2时,ax5+bx3+cx-5,=a×(-2)5+b×(-2)3+(-2)c-5,=-32a-
a最大.b最小36X3/4X3/4X63+3/4=27*3/4(63+1)=27*48=1296梨的质量是单位一.苹果质量=3/4梨的质量
由题得-3^5a-3^3b-3c=123^5a+3^3b+3c=-12ax5+bx3+cx-5当x=3时ax5+bx3+cx-5=3^5a+3^3b+3c-5=-17
第一个把x=-2带入《-10a-6b-2c》=y+1=6当x=2时《10a+6b+2c》=-6所以y=-7第2到2的3m+n+1次方等于270=2的3m次方*2的n次方*2=27*2*2的n次方2的n
根据题意把x=-3代入多项式得:a×(-3)5+b×(-3)3+c×(-3)-5=7,化简得:-35a-33b-3c-5=7,即35a+33b+3c=-12,则把x=3代入多项式得:35a+33b+3
∵(x+2)5=ax5+bx4+cx3+dx2+ex+f,令x=-2,有0=-32a+16b-8c+4d-2e+f①令x=2,有1024=32a+16b+8c+4d+2e+f②由②+①有:1024=3
x=-1ax^5+bx^3+cx-5=-a-b-c-5=15-a-b-c=20a+b+c=-20x=1ax^5+bx^3+cx-5=abc-5=-20-5=-252^2