y=x的三分之二次方
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y·x^¾再问:可以有过程吗?再答:(x^¼xy^1/3)/[x^½y^(﹣2/3)]=x^¼x^(1-½)y^[1/3-(﹣2/3)
令m=a三分之一次方n=b三分之一次方则m²+n²=4x=m³+3mn²y=n³+3m²n则x+y=m³+3m²n+3m
x+y=a+3a^(1/3)*b^(2/3)+b+3a^(2/3)*b^(1/3)=[a^(1/3)+b^(1/3)]^3x-y=a+3a^(1/3)*b^(2/3)-b-3a^(2/3)*b^(1/
x+y=a+3a^(1/3)*b^(2/3)+b+3a^(2/3)*b^(1/3)=[a^(1/3)+b^(1/3)]^3x-y=a+3a^(1/3)*b^(2/3)-b-3a^(2/3)*b^(1/
(-二分之一x的平方y)的-2次方×(-三分之二xy的平方)的-1次方=(4分之1x的4次幂y²)的-1次幂×(-2分之3x的-1次幂y的-2次幂)=4x的-4次幂y的-2次幂×(-2分之3
(2/3)^2002x(3/2)^2003÷(-1)的2004=[(2/3)^2002x(3/2)^2002x(3/2)]÷1=3/2即是说:先把(3/2)^2003=(3/2)^2002x(3/2)
(1)f(x)=1/(x^2),定义域:x∈R且x≠0f(-x)=1/[(-x)^2]=1/(x^2)=f(x),所以是偶函数(2)f(x)=x^(2/3)=(x^2)开三次方,定义域:x∈Rf(-x
(1)y=x的负二次方定义域是x≠0的所有实数(x∈R,且x≠0)是偶函数(2)y=x的三分之二次方定义域是x∈R是偶函数
∵-2xy的n次方于三分之二x的m+1次方y的和是一个单项式∴1=m+1n=1∴m=0n=1-2xy+(2/3)xy=4/3xy=3分之4xy
由|2x/3-6|+|0.2+2y|=0,可知:2x/3-6=,x=9,0.2+2y=0,y=-0.1,∴x²+y²=9²+(0.1)²=81.0.01
y^(2/3)=x[y^(2/3)]^(3/2)=y=x^(3/2)
lim[(x+dx)^(2/3)-x^(2/3)]/dx=lim[(x+dx)^2-x^2]/{[(x+dx)^(4/3)+x^(2/3)*(x+dx)^(2/3)+x^(4/3)]*dx}=lim(
y=(2/3)^-|x|是个偶函数只要算出x>=0的一部分值域即可x>=0y=(2/3)^-x=(3/2)^x>=0所以值域是y>=1
三分之二的2007次方X1.5的2008次方X-1的2009次方 =(2/3)^2007×(3/2)^2007×(3/2)×(-1)^2009 =(2/3×3/2)^2007×3/2×(-1)
y=(x-1)^(-2/3)=1/(x-1)^(2/3)定义域为x>1及x1单调减在x
偶化成y=根3下x的平方那样不管X是正还是负平方了都是正再开三次方所以偶
x+x^(-1)=3二边平方得:x^2+x^(-2)+2=9x^2+x^(-2)=7[x^2/3]^3+[x^(-2/3)]^3=7[x^2/3+x^(-2/3)][(x^2/3+x^(-2/3))^
-0.5X^(a+b)y^(a-b)与2/3x^(a-1)是同类项a+b=(a-1)a-b=0a=-1b=-1
原式=[x^(1/3)+y^(1/3)][x^(2/3)-x^(1/3)y^(1/3)+y^(2/3)]/[x^(1/3)+y^(1/3)]-[x^(2/3)+y^(2/3)][x^(2/3)-y^(
原式=[x^(1/3)+y^(1/3)][x^(2/3)-x^(1/3)y^(1/3)+y^(2/3)]/[x^(1/3)+y^(1/3)]-[x^(2/3)+y^(2/3)][x^(2/3)-y^(