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Lösung 3.1:1b

Aus Online Mathematik Brückenkurs 2

(Unterschied zwischen Versionen)
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K (Robot: Automated text replacement (-{{Displayed math +{{Abgesetzte Formel))
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When we remove the parentheses, the terms inside change sign,
When we remove the parentheses, the terms inside change sign,
-
{{Displayed math||<math>3i-(2-i)=3i-2+i\,\textrm{.}</math>}}
+
{{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,
-
{{Displayed math||<math>\begin{align}
+
{{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,

3i−(2−i)=3i−2+i.

Then, we collect together real and imaginary parts,

3i−2+i=−2+(3i+i)=−2+(3+1)i=−2+4i.
Von „http://wiki.math.se/wikis/2009/bridgecourse2-TU-Berlin/index.php/L%C3%B6sung_3.1:1b“