若函数f(x)和g(x)分别由下表给出:
x |
1 |
2 |
3 |
4 |
x |
1 |
2 |
3 |
4 |
f(x) |
2 |
3 |
4 |
1 |
g(x) |
2 |
1 |
4 |
3 |
则f(g(1))=____________,满足g(f(x))=1的x值是________.
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若函数f(x)和g(x)分别由下表给出:
x |
1 |
2 |
3 |
4 |
x |
1 |
2 |
3 |
4 |
f(x) |
2 |
3 |
4 |
1 |
g(x) |
2 |
1 |
4 |
3 |
则f(g(1))=____________,满足g(f(x))=1的x值是________.