CodeOptimist Posted March 12, 2004 Report Share Posted March 12, 2004 I thought it'd be fun to start a thread with some simple math examples to figure out! Whoever gets the answer can ask the next question.First example:Solve:x + 5 = -(x + 3) Quote Link to comment Share on other sites More sharing options...
King Tutankhamun Posted March 12, 2004 Report Share Posted March 12, 2004 Should we show our work? x+5 = -x-3 -5 -5+x +x2x = -8/2 /2x = -4 Next one: what is square root of 68 in radical form? (use '|' to show sq root) Quote Link to comment Share on other sites More sharing options...
chichigrande Posted March 13, 2004 Report Share Posted March 13, 2004 2l7If a rectangle has a length of 8 and a width of 6, how long is the diagnol? Quote Link to comment Share on other sites More sharing options...
Sam Posted March 13, 2004 Report Share Posted March 13, 2004 A2 + B2 = C26^2 + 8^2 =C236 + 64 =C2 100=C2|100= 10Someone else ask one... Quote Link to comment Share on other sites More sharing options...
CodeOptimist Posted March 13, 2004 Author Report Share Posted March 13, 2004 What is the area of a half-circle with a radius of 8? Quote Link to comment Share on other sites More sharing options...
Sam Posted March 13, 2004 Report Share Posted March 13, 2004 .5(3.14)(8^2)1.57(69)=100.53not sure if that is right Quote Link to comment Share on other sites More sharing options...
chichigrande Posted March 13, 2004 Report Share Posted March 13, 2004 3.14(8^2)/2I got 100.48 Quote Link to comment Share on other sites More sharing options...
CodeOptimist Posted March 13, 2004 Author Report Share Posted March 13, 2004 100.48 is correct, you're up Matt Quote Link to comment Share on other sites More sharing options...
King Tutankhamun Posted March 15, 2004 Report Share Posted March 15, 2004 Since Matt didn't ask one, I will.Solve the proportion:3 = x - -4 100 Quote Link to comment Share on other sites More sharing options...
Sam Posted March 15, 2004 Report Share Posted March 15, 2004 easy 75 Quote Link to comment Share on other sites More sharing options...
King Tutankhamun Posted March 15, 2004 Report Share Posted March 15, 2004 Bing Bing.You can ask the next one. Quote Link to comment Share on other sites More sharing options...
tripled Posted March 16, 2004 Report Share Posted March 16, 2004 what aboutsqr(sin x) + sqr(cos x) Quote Link to comment Share on other sites More sharing options...
Curufinwe Posted March 16, 2004 Report Share Posted March 16, 2004 cos²x + sin²x = 1mine now f'(ln x) = ?????? Quote Link to comment Share on other sites More sharing options...
CodeOptimist Posted March 16, 2004 Author Report Share Posted March 16, 2004 Ehh, the title reads *Simple* practice problems ;) Quote Link to comment Share on other sites More sharing options...
DarkAngelBGE Posted March 16, 2004 Report Share Posted March 16, 2004 What is the function ln x ? Quote Link to comment Share on other sites More sharing options...
Tonto_Icy_Tripod Posted March 16, 2004 Report Share Posted March 16, 2004 not everyone's doing logs yet yknow Quote Link to comment Share on other sites More sharing options...
tripled Posted March 16, 2004 Report Share Posted March 16, 2004 @timbo:i think:log e xbut especially you should know better timbo Quote Link to comment Share on other sites More sharing options...
Curufinwe Posted March 16, 2004 Report Share Posted March 16, 2004 Aye, sorry ... I thought most of you guys were in College, University or at least last year High School ...the answer was 1/xAnyway, a simpler one :(4-9)x(9+4) = ????? Quote Link to comment Share on other sites More sharing options...
tripled Posted March 16, 2004 Report Share Posted March 16, 2004 -65we aren't in university,but we also don't visit the first classthat task is really too sinple Quote Link to comment Share on other sites More sharing options...
Curufinwe Posted March 16, 2004 Report Share Posted March 16, 2004 sorry again, I just wanted you to use the property (a-(a+ ... but I mixed things ... and I wrote 2 digits ... I wanted to write actually :(4-x)(x+4) = ??? Quote Link to comment Share on other sites More sharing options...
tripled Posted March 16, 2004 Report Share Posted March 16, 2004 no prob,sqr(x) - 16 Quote Link to comment Share on other sites More sharing options...
Curufinwe Posted March 16, 2004 Report Share Posted March 16, 2004 no sorry, that is not right ... start again ... Quote Link to comment Share on other sites More sharing options...
tripled Posted March 16, 2004 Report Share Posted March 16, 2004 oh @#$%! answered too fast, without thinking16 - sqr(x) Quote Link to comment Share on other sites More sharing options...
DarkAngelBGE Posted March 16, 2004 Report Share Posted March 16, 2004 Oh I did logs long ago. Just need to be reminded of ln. Quote Link to comment Share on other sites More sharing options...
DarkAngelBGE Posted March 16, 2004 Report Share Posted March 16, 2004 Curu, you sure you didn't want to ask: (x-4)(x+4) ? Quote Link to comment Share on other sites More sharing options...
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