$\sqrt{x^2+y^2+z^2}=?$
Should we brute-force this or is there a more beautiful or subtle way of getting what we want?
Source:
(x+12)²+(y+4)²+(z+3)²=0
√(x²+y²+z²)=?
#SATPrep #mathchat #algebra
— David Marain (@dmarain) May 13, 2015
Showing posts with label Transform. Show all posts
Showing posts with label Transform. Show all posts
Wednesday, May 13, 2015
458: Is That You, Pythagoras?
If we stipulate that $(x+12)^2+(y+4)^2+(z+3)^2=0$, then
$\sqrt{x^2+y^2+z^2}=?$
Should we brute-force this or is there a more beautiful or subtle way of getting what we want?
Source:
$\sqrt{x^2+y^2+z^2}=?$
Should we brute-force this or is there a more beautiful or subtle way of getting what we want?
Source:
Saturday, April 18, 2015
437: Specificity and Clarity in Math
Mathematical Grammar ... I think a comma might be necessary in #2, maybe two of them. What do you think, students?
This activity, which asks kids to connect representations, was designed by @MaeghanMath #NCTMBoston pic.twitter.com/oatBMTqTLH
— David Wees (@davidwees) April 16, 2015
Friday, January 16, 2015
374: Geometric Transformations
Source:
I thought of another possibility. What could a student who does this be thinking? #mathchat pic.twitter.com/aktviLLeii
— David Wees (@davidwees) January 17, 2015
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