Solution 1.3:5c

From Förberedande kurs i matematik 1

Revision as of 14:26, 22 September 2008 by Tek (Talk | contribs)
(diff) ←Older revision | Current revision (diff) | Newer revision→ (diff)
Jump to: navigation, search

We can write \displaystyle 9 = 3\cdot 3 = 3^{2} and then the power rules give

\displaystyle 9^{\frac{3}{2}} = \bigl(3^{2}\bigr)^{\frac{3}{2}} = 3^{2\cdot \frac{3}{2}} = 3^{3} = 3\cdot 3\cdot 3 = 27\,.