Question

Wolfram Tips

http://www.wolframalpha.com/input/?i=line+%28-6%2C+-1%29+and+%282%2C+-3%29

http://www.wolframalpha.com/input/?i=number+line+x^2%3E5%2C+0%3C%3Dx%3C3

http://www.wolframalpha.com/input/?i=|x-4|%3D|3-x|

http://www.wolframalpha.com/input/?i={1%2F4%2C+-1%2F2%2C+1}+cross+{1%2F3%2C+1%2C+-2%2F3}

http://www.wolframalpha.com/input/?i=plot+x^2%2By^2%3C1+and+y%3Ex

Answer 1

Put any good ones here.

Answer 2

http://www.wolframalpha.com/input/?i=2x%2B3y-5z%3D2%2Cx%2By%2Bz%3D4%2C-x%2B3y-4z%3D-5

Answer 3

and for implicit diff
http://www.wolframalpha.com/input/?i=d%2Fdx+cos%28y%28x%29%29%2Bx*y%28x%29+%3D+x^2

Answer 4

Steps are good on that one..

Answer 5

STATS

http://www.wolframalpha.com/input/?i= {25%2C+35%2C+10%2C+17%2C+29%2C+14%2C+21%2C+31}

http://www.wolframalpha.com/input/?i=mean+ {21.3%2C+38.4%2C+12.7%2C+41.6}

http://www.wolframalpha.com/input/?i=median+98.17%2C+112.3%2C+102.6%2C+94.3%2C+108.1

http://www.wolframalpha.com/input/?i=variance+ {21.3%2C+38.4%2C+12.7%2C+41.6}

http://www.wolframalpha.com/input/?i=standard+deviation+98.17%2C+112.3%2C+102.6%2C+94.3%2C+108.1

Answer 6

Now how to do one for all those perpendicular plus point questions.

Answer 7

i like the standard deviation one. wish we could save these