1.A={1,4,2x},B={1,x^2},B∈A,求x 2.f(x)=lg(2x-x^2)的单减区间3.f(x-2)={1+x^2,x>2;2-x,x≤2} 求f(1)的值4.f(x)=根号log1/2 (x-1)的定义域5.f(x)={log3x (x>0);2^x (x≤0)},求f(9)+f(0)的值6.S={x| 2^-x
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![1.A={1,4,2x},B={1,x^2},B∈A,求x 2.f(x)=lg(2x-x^2)的单减区间3.f(x-2)={1+x^2,x>2;2-x,x≤2} 求f(1)的值4.f(x)=根号log1/2 (x-1)的定义域5.f(x)={log3x (x>0);2^x (x≤0)},求f(9)+f(0)的值6.S={x| 2^-x](/uploads/image/z/801269-53-9.jpg?t=1.A%3D%7B1%2C4%2C2x%7D%2CB%3D%7B1%2Cx%5E2%7D%2CB%E2%88%88A%2C%E6%B1%82x+2.f%28x%29%3Dlg%282x-x%5E2%29%E7%9A%84%E5%8D%95%E5%87%8F%E5%8C%BA%E9%97%B43.f%28x-2%29%3D%7B1%2Bx%5E2%2Cx%3E2%3B2-x%2Cx%E2%89%A42%7D+%E6%B1%82f%281%29%E7%9A%84%E5%80%BC4.f%28x%29%3D%E6%A0%B9%E5%8F%B7log1%2F2+%28x-1%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F5.f%28x%29%3D%7Blog3x+%28x%3E0%29%3B2%5Ex+%28x%E2%89%A40%29%7D%2C%E6%B1%82f%289%29%2Bf%280%29%E7%9A%84%E5%80%BC6.S%3D%7Bx%7C+2%5E-x)
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1.A={1,4,2x},B={1,x^2},B∈A,求x 2.f(x)=lg(2x-x^2)的单减区间3.f(x-2)={1+x^2,x>2;2-x,x≤2} 求f(1)的值4.f(x)=根号log1/2 (x-1)的定义域5.f(x)={log3x (x>0);2^x (x≤0)},求f(9)+f(0)的值6.S={x| 2^-x
1.A={1,4,2x},B={1,x^2},B∈A,求x 2.f(x)=lg(2x-x^2)的单减区间
3.f(x-2)={1+x^2,x>2;2-x,x≤2} 求f(1)的值
4.f(x)=根号log1/2 (x-1)的定义域
5.f(x)={log3x (x>0);2^x (x≤0)},求f(9)+f(0)的值
6.S={x| 2^-x
1.A={1,4,2x},B={1,x^2},B∈A,求x 2.f(x)=lg(2x-x^2)的单减区间3.f(x-2)={1+x^2,x>2;2-x,x≤2} 求f(1)的值4.f(x)=根号log1/2 (x-1)的定义域5.f(x)={log3x (x>0);2^x (x≤0)},求f(9)+f(0)的值6.S={x| 2^-x
1.2,-2,0
2.(0,1)
6.{x| -2b=1 f
(x)=(1-2^x)/(a+2^(x+1)) 又由f
(1)= -f(-1)知a=2
已知集合A={x|(x-2)*(x+1)>0},B={x|4x+a
已知a=x^2-7x-2,b=-2x^2+4x-1,计算:1.a+b 2.b+a .a-b 4.b-a
1.x+9/x+8- x+10/x+9=x+6/x+5- x+7/x+6;2.x³+2/x²-x+1+ x³-9/x²+2x+4=2x-1;3.x-a-b/c+ x-b-c/a+ x-c-a/b=3.(空开的指另一个分式)第二题不用了。
4x+1/(x-2)(x-5)=a/x-2+b/x-5
已知-x+4/x(x-1)(x+2)=A/x+B/x-1+C/x+2(A,B,C为常数),求A,B,C的值
已知:(4x+1)/(x-2)(x-5)=A/(x-5)+B/(x-2),则A= ,B=已知:(4x+1)/(x-2)(x-5)=A/(x-5)+B/(x-2),则A= ,B=
x/a^2-bx+x/b=1 (a,b不等于0)x-8/x-3-x-9/x-4=1/x+3-1/x+8
2x-4/(x^2-4x-5)=A/(x-5)+B/(x+1),x≠5,-1.A.B的值是
已知3x-4/(x-1)(x-2)=A/x-1+B/x-2,求A,B的值
已知3X-4/(x-1)(x-2)=A/X-1+B/X-2求整式A,B
已知A={x|x-1>a^2},B=﹛x|x-4
(2X+1)/(x-3)(x+4)=A/(x-3)+B/(x+4) 求A.B的值.
如果2x+1/(x-3)(x+4)=A/(3-x)+B/x+4,求A、B的值
4x+1/x^2-7x+10=A/X-2 +B/x-5 求A ,B的值
已知:4x+1/(x-2)(x-5)=A/x-5+B/x-2,求A、B的值?
4x+1/x^2-7x+10=A/X-2 +B/x-5 求A ,B的值
已知:4x+1/(x-2)(x-5)=A/x+5+B/x-2,求A,B的值
已知4x+1/(x-2)(x-5)=A/x-5 - B/x-2,求A-B的平方根