AAARGH, and to think the final is no calculators allowed!
I was clearly dropped on my head as a child.
(Well, okay, I actually was. Which is an old family joke by this point. But nevermind.)
Okay, so I'm taking, "Calculus for Scientists I" this semester, yes? The first chapter of our textbook - chapter 0 - is a review/pre-calc chapter. (Yes, chapter zero. A bit like size zero, maybe?)
I am slowly slogging my way through it. The teacher isn't a great deal of help, given that he barely speaks English and pretty much assumes this is a light review for most people anyway. (And for people coming straight out of high school, I'm sure it is. Thing is, for ME, it's been about four years since I last did anything REMOTELY like this stuff.)
I've not had too much trouble up until now; it's mostly coming back to me. BUT.
Last night I was working on finding the equilibrium point between a demand curve and a supply curve, and I swear to god...I CANNOT solve this problem. What's even sadder about that is that it's an EXAMPLE problem, the textbook gives me both equations AND the answer, and I still can't figure out how to get to the answer.
Basically, the problem is this:
-50p + 900 = 100p - 600
(Solve for p.)
And WTF, I can't fucking find the bloody p! The textbook says the answer is 10, and I know this is correct because plugging it in gives me 400 on both sides. I've tripled-checked that I've copied all the numbers correctly, too.
But I can't get 10!
I MUST be doing something incredibly harebrained. Either I'm screwing up the arithmetic (because seriously guys, I can do algebra okay, but I'm a borderline remedial student when it comes to basic shit like adding and dividing), or I've got the operations wrong or something. I keep coming up with crazy shit like 30 and -3, and I am just doing something so, so wrong.
If ANYBODY has any idea what I'm doing wrong, or can post a solution, I'd be HUGELY grateful.
Edit: Oh god, the answer was like, *valleygirl* DUUUUH!
(Well, okay, I actually was. Which is an old family joke by this point. But nevermind.)
Okay, so I'm taking, "Calculus for Scientists I" this semester, yes? The first chapter of our textbook - chapter 0 - is a review/pre-calc chapter. (Yes, chapter zero. A bit like size zero, maybe?)
I am slowly slogging my way through it. The teacher isn't a great deal of help, given that he barely speaks English and pretty much assumes this is a light review for most people anyway. (And for people coming straight out of high school, I'm sure it is. Thing is, for ME, it's been about four years since I last did anything REMOTELY like this stuff.)
I've not had too much trouble up until now; it's mostly coming back to me. BUT.
Last night I was working on finding the equilibrium point between a demand curve and a supply curve, and I swear to god...I CANNOT solve this problem. What's even sadder about that is that it's an EXAMPLE problem, the textbook gives me both equations AND the answer, and I still can't figure out how to get to the answer.
Basically, the problem is this:
-50p + 900 = 100p - 600
(Solve for p.)
And WTF, I can't fucking find the bloody p! The textbook says the answer is 10, and I know this is correct because plugging it in gives me 400 on both sides. I've tripled-checked that I've copied all the numbers correctly, too.
But I can't get 10!
I MUST be doing something incredibly harebrained. Either I'm screwing up the arithmetic (because seriously guys, I can do algebra okay, but I'm a borderline remedial student when it comes to basic shit like adding and dividing), or I've got the operations wrong or something. I keep coming up with crazy shit like 30 and -3, and I am just doing something so, so wrong.
If ANYBODY has any idea what I'm doing wrong, or can post a solution, I'd be HUGELY grateful.
Edit: Oh god, the answer was like, *valleygirl* DUUUUH!