Description: Relationship between the natural logarithm function and the exponential function. (Contributed by Steve Rodriguez, 25-Nov-2007)
Ref | Expression | ||
---|---|---|---|
Assertion | relogeftb | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rpcnne0 | |
|
2 | relogrn | |
|
3 | logeftb | |
|
4 | 3 | 3expa | |
5 | 1 2 4 | syl2an | |