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Diffstat (limited to 'maths/notes/5')
| -rwxr-xr-x | maths/notes/5 | 12 |
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diff --git a/maths/notes/5 b/maths/notes/5 new file mode 100755 index 0000000..e389064 --- /dev/null +++ b/maths/notes/5 @@ -0,0 +1,12 @@ +writing this late and cant really remember what we did +we did some work on completing the square which is never too hard, however i should try and do some more work on it +try and remember how to put something into a completed square form as well as take it out + +x^2 + 6x + 6 +(x + 3)^2 - 3 +method is to half B, then subtract b^2, and add whatever is needed to make sure + c works + +this can be used to find the turning point of the graph, the section in brackets needs to have its sign flipped +this is similar to using factorising to solve a quadratic +the value outside the bracket stays as is +in the example given the turning point would be (-3, -3) |