Lösung 3.1:1b
Aus Online Mathematik Brückenkurs 2
(Unterschied zwischen Versionen)
K |
K (Robot: Automated text replacement (-{{Displayed math +{{Abgesetzte Formel)) |
||
Zeile 1: | Zeile 1: | ||
When we remove the parentheses, the terms inside change sign, | When we remove the parentheses, the terms inside change sign, | ||
- | {{ | + | {{Abgesetzte Formel||<math>3i-(2-i)=3i-2+i\,\textrm{.}</math>}} |
Then, we collect together real and imaginary parts, | Then, we collect together real and imaginary parts, | ||
- | {{ | + | {{Abgesetzte Formel||<math>\begin{align} |
3i-2+i | 3i-2+i | ||
&=-2+(3i+i)\\[5pt] | &=-2+(3i+i)\\[5pt] |
Version vom 13:04, 10. Mär. 2009
When we remove the parentheses, the terms inside change sign,
\displaystyle 3i-(2-i)=3i-2+i\,\textrm{.} |
Then, we collect together real and imaginary parts,
\displaystyle \begin{align}
3i-2+i &=-2+(3i+i)\\[5pt] &=-2+(3+1)i\\[5pt] &=-2+4i\,\textrm{.} \end{align} |