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+1 Carrotsticks, ur an asset to this forum mate

start from i (0,1) and move anti-clockwise to -i (0,-1). b/c it is pi/2 it will be a semi-circle. so u end up with the left side of a circle (it is a semi circle) starting from (0,1) going through (-1,0) and finishing at (0,-1). NOTE: u must put open circles at the start and end points ie i...

mucking around with geektool. yeabuddy

wait, so we should never use methods outside the syllabus? :S

it doesn't matter if it's beyond the syllabus does it? if it works it works right? but will it ever be quicker :S

changing to double angle results in an easier ibp. you'll use ibp to get the integral of e^xcos2x instead of integral of e^xsin^2x

when would u use euler's formula? is it useful for ext2 hsc questions?

this.

u can use integration by parts

wow! thanks Trebla, ur a genius. i'm yet to find a question where euler's formula is actually quicker than solving conventionally. can u shed some light? cheers lad

Hi, Recently i've been looking at integrating using Euler's formula, i don't know when it will be useful but im trying to get the hang of it.. Ive been trying to do this integral: \int%20\%20e^x%20sin^2x%20dx using Euler's formula but i can't get it. I can do it using integration by parts...

when you solve those two quadratic ineuqalities you get x<=-1 , x>=0 and x<=0 , x>=1 respectively. but x =/=0 so you would cancel out the equality for the x>=0 and <=0, but wouldn't the combined range for the above solutions be x is all real excluding x=0??? thanks

thanks heaps! but i was looking for a quicker way, not really solving graphically, is there an easier option?

HEY GUYS, HOW DO U SOLVE THIS INEQUALITY?

what was his name?

LOOOOOOOL! strong troll

Hi guys, i need help with this question please! Mesons have a life of 2.2µs. However, mesons formed in the upper atmosphere as air particles are hit by cosmic rays take 16µs to reach the ground. Calculate the speed of the meson. It's from Surfing Physics - Space by Brian Shadwick. Thanks...