Solution 3.1:2c

From Förberedande kurs i matematik 1

(Difference between revisions)
Jump to: navigation, search
m (Lösning 3.1:2c moved to Solution 3.1:2c: Robot: moved page)
Line 1: Line 1:
-
{{NAVCONTENT_START}}
+
The expression
-
<center> [[Image:3_1_2c.gif]] </center>
+
<math>-\text{3}^{\text{2 }}</math>
-
{{NAVCONTENT_STOP}}
+
means
 +
<math>-\left( \text{3} \right)^{\text{2}}\text{ }=-\text{9 }</math>
 +
(and not
 +
<math>\left( -\text{3} \right)^{\text{2}}</math>
 +
) and so we have
 +
 
 +
 
 +
The root expression
 +
<math>\sqrt{-9}</math>
 +
is not defined because there is no number which, when multiplied by itself, gives
 +
<math>-\text{9}</math>.

Revision as of 10:47, 22 September 2008

The expression \displaystyle -\text{3}^{\text{2 }} means \displaystyle -\left( \text{3} \right)^{\text{2}}\text{ }=-\text{9 } (and not \displaystyle \left( -\text{3} \right)^{\text{2}} ) and so we have


The root expression \displaystyle \sqrt{-9} is not defined because there is no number which, when multiplied by itself, gives \displaystyle -\text{9}.

Retrieved from "http://wiki.sommarmatte.se/wikis/2009/bridgecourse1-ImperialCollege/index.php/Solution_3.1:2c"