Recent content by physicsed

thanks buddy your awesome

righttt pi [(1/-1)x^-1]

(-1/3)x^-3

since it's divided by 1, isn't it negative n =x^-2

\pi [ \frac{x^{-3}}{-3}]

\pi \int^{2}_{1} \frac{1}{x^2} dx

\int^{1}_{2} \pi [\frac{1}{x}]^2 dx if you help me with this problem, i am sure i will get the rest of the problems.

[SOLVED] volumes... last week of calc i was absent when we went over the volume section. y= 1/x, x= 1, x= 2, y= 0,; about the x-axis \int^{1}_{2} \pi \frac{1}{x} dx i don't know what's next. can anyone inform me, please

am soo stupid...thanks

2x^2 - x^2 - 1 = x^2 - 1 it might sound childish, but how is that equal? you can't factor anything or simplify it

\frac{2x^2- (x^2+ 1)}{x^2}= \frac{x^2-1}{x^2} how are they equall?

so, i was right?

how are they equall?

\frac{(2x)- (x^2+1)}{x^2}= \frac{x^2- 1}{x^2} how are those equal?

whaaat