LonelyandForgotten
Who can teach me basic math skills? pleaseeee, this is very urgent!
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hartnn
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yes, do you have any specific question ?
cgreenwade2000
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Sounds like a lot of work , but what exactly do you call basic?
LonelyandForgotten
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nope, nothing in mind.. i guess first thing i would like to learn is how do you cross multiply?
LonelyandForgotten
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its just that i will be taking a test over these skills to see how much i know and i know nothing at all :/ so i need some help
Goten77
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basic skills
lesson 1:
\[\int\limits_{}^{}= the INtegral symbol\]
hartnn
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sure, cross-multiplication
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got this ?
LonelyandForgotten
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i think so, yeah
hartnn
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need example ?
hartnn
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|dw:1358452038527:dw|
you try ...
LonelyandForgotten
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maybe i should just look in a math textbook or something :/
Goten77
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|dw:1358452105344:dw|
lesson 2 the derivative
ghazi
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\[4\frac{ 4 }{ 5 }= \frac{ 4*5 +4 }{ 5}=\frac{ 20+4 }{ 5 }=\frac{ 24 }{ 5 }\] @LonelyandForgotten remember this?
LonelyandForgotten
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@hartnn umm 18 is the answer?
hartnn
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now ?
LonelyandForgotten
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@ghazi is that for cross multiplication?
hartnn
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are you understanding the drawings ?
ghazi
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no that is for changing fraction
Goten77
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ghazi
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for cross multiplication lets say we have \[\frac{ 2 }{ 3 }=\frac{ x }{ 4 }\] then by cross multiplication we can see that \[2*4=x*3\] and x=2*4/3=8/3|dw:1358452516250:dw| @LonelyandForgotten hope its clear to you now :)