CALC

posted by .

i still need help on this...integrate (-2)/(xln^4(x) dx...should i be using substitution ...if yes then wut should i substitute? plz help me..thanks in advanced!

at is wrong with u= 1/x and dv= dx/ln^4(x) ?

remember d/dx (lnx)^-n= (-n/x)*lnx)^(n-1)

okey thank you...i got it now

Similar Questions

1. calc

correction: 9/25(u+7)u^11 du = 9/25(u^12 + 7 u^11) du and you can easily integrate this indefinate integral of 9x(5x-7)^11 dx using the u substitution method: i know u= (5x-7) but when i use this the x in the 9x doesn't cancel thus …
2. Alg-Substitution (check plz)

k well i had to use substitution to find the point of intersection for these 2 equations x-y=10 3x+y=11 i chose to substitute y in the first equation my final answer was (-1/2 , 5) can someone clarify this, and if it's wrong, where'd …
3. Calculus

After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the car moving at 6 hours?
4. calculus-integration!

should i use substitution?? if yes how should should i use it?
5. calculus-integration

integrate -2/xln^4(x)...plz help me..give me an idea on how to start..plz The derivative of the ln(x) function is 1/x and this is multiplying the ln^4(x). You can thus write the integral as: -2 * 1/5 ln^5(x) + constant. is that the …
6. Quick Calc Question

I can't remember how to integrate ye^ey with respect to y. Is it (y^2)e^xy?
7. calc

Integrate (1/2)^(3x+2)dx using substitution.
8. Mat 116

substitution method 7x +9y= 19 x=25-5y ___________ 7(25-5y)+9=19 175-35 +9=19 -175 -175 _______________ -26y= -156 y=6 substitute for x x=25-5y x=25-5(6) x=25-30 x=-5 now substitute 7x+9y=19 7(-5)+ 9(6)=19 -30+56=19 19=19 his part …
9. Calc

Use substitution to evaluate the indefinite integral: The integral of [ (sq. root (1 + ln x)) ((ln x)/x) dx] Im confused on what i should substitute u and du for. Thank you so much!!
10. Calculus i need help plz plz

Integrate:Sinxcosx/a^2cos^2(x)+b^2sin^2(x))dx?

More Similar Questions