A Study on Various Proofs of Equality $\frac{1}{h_a}+\frac{1}{h_b}+\frac{1}{h_c}=\frac{1}{r}$
(등식 $\frac{1}{h_a}+\frac{1}{h_b}+\frac{1}{h_c}=\frac{1}{r}$ 의 다양한 증명방법에 대한 연구)
-
- Journal of the Korean School Mathematics Society
- /
- v.10 no.4
- /
- pp.519-533
- /
- 2007