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math456Best ResponseYou've already chosen the best response.0
\[\int\limits_{2}^{5} (42x)dx\]
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
which part is giving you night terrors?
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
what is the integration rule for x^n ?
 one year ago

math456Best ResponseYou've already chosen the best response.0
\[\int\limits_{2}^{5} 4.dx  2\int\limits_{2}^{5}x.dx\]
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
or you can think of it in terms of derivatives; what is the derivative rule for x^n ?
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
good, now how would you undo that? which is all an integration is ... undoing a derivative
 one year ago

math456Best ResponseYou've already chosen the best response.0
thats wht i am having trouble with!
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
divide by n and add 1 back to the exponent
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
\[x^1=x^{21}\]so n=2 in this case
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
so, does x^2 derive down to 2x?
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
but we already have a 2x
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
you dont HAVE to pull out the constant. In this case it acutally helps out
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
\[\frac d{dx}x^2=2x\] \[\int 2x~dx=x^2\]
 one year ago

math456Best ResponseYou've already chosen the best response.0
ohh gotch yea so, its gona be like (52)^2
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
\[\int\limits_{2}^{5} 4.dx  \int\limits_{2}^{5}2x.dx\] \[4x(5,2)  x^2(5,2)\] \[[4(5)4(2)]  [(5)^2(2)^2]\]
 one year ago

math456Best ResponseYou've already chosen the best response.0
so i was doing just 1 term of x
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
you were mixing up the subtraction and the function into an ungodly abomination :)
 one year ago

math456Best ResponseYou've already chosen the best response.0
yea right, i got it now! Thank you very much.. :)
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
\[\int_{a}^{b} f(x)~dx=F(b)F(a)~NOT~F(ba)\]
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
208(254) 20825+4 24  33 = 9 yes
 one year ago
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