Recent content by guicortei

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    What is the Secret to Discovering Integrals without Integration?

    it is not me meaningless... integral of x dx = x^2/2 + Constant [integral of x dx](x=1) = 1/2 + Constant [integral of x dx](x=0) = 0 + Constant (same constant) Integral of x dx, x=0 to x=1... is equal... [integral of x dx](x=1) minus [integral of x dx](x=0) is equal (1/2 +...
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    What is the Secret to Discovering Integrals without Integration?

    when we integrate f(x) from x=0 to x=1, the result is [the integral of f(x)] calculated with x=1 minus [the integral of f(x)] calculated with x = 0... then... I tried to mean... integral f(x) dx from "a" to "x" is equal to [integral of f(x)](undefined) minus [integral of f(x)](undefined) with x...
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    What is the Secret to Discovering Integrals without Integration?

    micromass...ok, how should I write "Integral of f(x)dx calculated on x=a"? micromass... I tried to find the K to the function f(x)=a Ln(b x + c) + d, and I found a K=c/b(d-a), and it is impossible to assume x=0 like you said above.. I'm thinking that the K can show the form how you could write...
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    What is the Secret to Discovering Integrals without Integration?

    Guys... I'm not a mathematician, so, sorry about my informality in math... here is something crazy that I discovered about 2 years ago. It is a way to discover some integrals without integrate the f(x)... It is a way knowing the f-1(x)... there is a crazy K (constant i guess)... I...
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    Deduction of Gauss' Normal Distribution Function

    Hi David.. I know this topic is very OLD (about 1.5 year), but when searching on google for exactly what you want, i was delivered to this forum... with no answer... so I kept searching and I found the derivation... you can find it here: http://www.planetmathematics.com/DerNorm.pdf P.S.: sorry...
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