Calc II...

[Trey803 5,000+ posts]

I have to say its more interesting the second time around than the first b/c now I can actually od it and understand what I am being taught

 

[HitManSE 10+ year member]

omg... only after 2 years out of college I completly forgot how to solve it... how idiot

Not really, you dont exactly use it for anything so why would you recall something exactly when you havnt had a use for it in 2 yrs?

Math isnt my strong point either, but ive never needed to use anything beyond simple geomety & common sense. Im not exactly into engineering though, so who knows.

Personally, I hate having to learn something when its irrelevant to know it.

 

[bk12321 10+ year member]

thanks guys

test tomorrow so im trying to study a little... boooo

 

[dragnix 5,000+ posts]

omg i read through the last posts of the first page and almost had a melt down

 

[bk12321 10+ year member]

okay i did the rest of my review problems...

this is the only other one that gave me trouble

(interval) (cos x)*(sin x)^2 dx

read as the interval of cosine of x times sine of x squared dx

 

[Trey803 5,000+ posts]

Not really, you dont exactly use it for anything so why would you recall something exactly when you havnt had a use for it in 2 yrs?
Math isnt my strong point either, but ive never needed to use anything beyond simple geomety & common sense. Im not exactly into engineering though, so who knows.

Personally, I hate having to learn something when its irrelevant to know it.

if your not an egineer physicist doctor or chemist u prolly dont use it

 

[ToyTundra 10+ year member]

okay i did the rest of my review problems...this is the only other one that gave me trouble

(interval) (cos x)*(sin x)^2 dx

read as the interval of cosine of x times sine of x squared dx

u substitution: u = sin(x)

 

[bk12321 10+ year member]

u substitution: u = sin(x)

oh i see

soooo

u=sinx

du=cosx dx

substitute and u get (integral) (u)^2 du

integrating gets (u^3)/3

substitute again gets (sin (x^3))/3 + c

right??????

 

[ToyTundra 10+ year member]

1/3*(sin(x))^3 +c

watch the parenthesis

 

[bk12321 10+ year member]

1/3*(sin(x))^3 +c
watch the parenthesis

yeah thats exactly what i have, im not used to typing this shit out. its on my paper like u have it

scoreeeeeeee thanks

 

[JDUB99 10+ year member]

1/3*(sin(x))^3 +c
watch the parenthesis

Werd, be careful with those. ToyTundra posted the right answer. It sounds like you understand it but you made a simple mistake at the end (which may have been an error in translation). I really wouldn't call Calc II hard. It takes a little while to understand the language, but after Calc I it should come a little easier. Calc III gave me more trouble than II, and Diff Eq. was even worse. I'm definately glad I'm finished with Physics and Math. Good luck!

 

[bose301s 5,000+ posts]

Oh calc, been done with it for 2 years now. Don't worry though, Calc 3 is infinitely easier than calc 1 or 2. The next thing you have to worry about is Differential Equations, those can be a pain in the ***.

 

[bose301s 5,000+ posts]

Werd, be careful with those. ToyTundra posted the right answer. It sounds like you understand it but you made a simple mistake at the end (which may have been an error in translation). I really wouldn't call Calc II hard. It takes a little while to understand the language, but after Calc I it should come a little easier. Calc III gave me more trouble than II, and Diff Eq. was even worse. I'm definately glad I'm finished with Physics and Math. Good luck!

Odd, Calc 1 was difficult but not overly so, Calc 2 was a nightmare and Calc 3 was a walk in the park, for me at least. I totally agree on Diff Eq. though.

 

[JDUB99 10+ year member]

Odd, Calc 1 was difficult but not overly so, Calc 2 was a nightmare and Calc 3 was a walk in the park, for me at least. I totally agree on Diff Eq. though.

That's what everyone says, but I guess I'm messed up. I aced Calc I and II but not Calc III. I think by the time I got to Calc III I was fed up and really didn't care as much. I really dunno. I didn't really think the material was hard, I just didn't do very well.

 

[bose301s 5,000+ posts]

Lol, I got As in Calc 1 and 2 but an AB in Calc 3 yet it was the easiest of the 3.