- #1
Buffu
- 849
- 146
I need to prove whether the given expression is finite but not infinitesimal/infinite/infinitesimal.$$H-K\over H^2 + K^2$$ Where ##H, K## are +ve infinite numbers.
I did the following,
Let ##H = \alpha K, \alpha \in R##
then,
$${\alpha K-K\over \alpha^2K^2 + K^2} \implies {\alpha - 1\over K(\alpha^2 + 1)}$$
Since ##{\alpha - 1\over (\alpha^2 + 1)}## is finite and ##K##, infinite. Thus the given expression is infinitesimal.
I am not sure if this is correct.
Am I correct ?
I did the following,
Let ##H = \alpha K, \alpha \in R##
then,
$${\alpha K-K\over \alpha^2K^2 + K^2} \implies {\alpha - 1\over K(\alpha^2 + 1)}$$
Since ##{\alpha - 1\over (\alpha^2 + 1)}## is finite and ##K##, infinite. Thus the given expression is infinitesimal.
I am not sure if this is correct.
Am I correct ?