- #1
alingy1
- 325
- 0
Homework Statement
Hello,
I know the direct substitution property in calculus. But, the definition of a rational function still confuses me.
For example, are these rational functions:
y=(x^2+2x+1)/(x+1)
y=((x^2+2)^(1/2))/(x+1)
The denominator of the first one could cancel. So, is there still a ratio? Is it a rational function?
The second one has a root in the numerator. The exponents of are not integers. Is it still a rational function?
Please help me. I do not understand the definition.