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1) ax>b 3) ax<b
2) ax≥b 4) ax≤b
1) ax2 + bx + c>0 (≠0)
2) ax2 + bx + c≥0 (≠0)
3) ax2 + bx + c<0 (≠0)
4)) ax2 + bx + c≤0 (≠0)
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1. a>b, b<a;
2. a>b, b>c, a>c;
3. a>b, , a+c>b+c;
4. a>b, c>0, ac>bc;
5. a>b, c<0, ac<bc;
6. a>b, c>d, a+c >b+d;
7. a>0, b>0, c>0, d>0, a>b c>d, ac>bd;
8. a>b>0, n , an>bn;
9. a>0, b>0, a>b, .
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a< x< b | |||
a≤ x≤ b | |||
a< x≤ b | |||
≤ x <b | |||
x≥a | |||
x≤b | |||
x>a | |||
x<b |
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ax>b
a>0 | a<0 | a=0 | |
x> | x< | 0x>b | |
b>0 | b<0 | b=0 0x>0 | |
ax<b
a>0 | a<0 | a=0 | |
x< | x> | 0x<b | |
b>0 | b<0 | b=0 0x<0 | |
ax b
a>0 | a<0 | a=0 | |
x | x | 0x b | |
b>0 | b<0 | b=0 0x 0 | |
ax b
a>0 | a<0 | a=0 | |
x | x | 0x b | |
b>0 | b<0 | b=0 0x 0 | |