Scratch

Harakou wrote:

JJROCKER wrote:

Harakou wrote:

5! = 120

Not that hard. Let's see now, how about this? (Simplify; no calculators now! And yes, the answer is a whole number.)

(5log(125))/(log(2.5) + log(2))

I have no clue, whats log?

log(x) is a logarithm of x with base 10. A logarithm is the inverse of a exponent. For a logarithm of x with base b and result a, b^a = x. So for example, log(100) = 2.

Of course, now that I posted that, I realized that it wasn't exactly the expression I intended. A better one that should be relatively easy to solve assuming you know the properties of logarithms would be this:
(125log(5))/(log(2.5) + log(2))

The basic properties are as follows:

log(a) + log(b) = log(ab)
log(a) - log (b) = log(a/b)
a * log(x) = log(x^a)
log (base b) of x = log(x)/log(b) (It's hard to express the base here because I don't have access to subscripts.)

Of course, I kinda feel like I'm intruding on your thread here. Not sure if you meant this as a specific discussion about factorials or a place to talk about mathematics in general and quiz each other. 

Im still really confused on log. What is ^ mean?

JJROCKER wrote:

Harakou wrote:

JJROCKER wrote:

I have no clue, whats log?

log(x) is a logarithm of x with base 10. A logarithm is the inverse of a exponent. For a logarithm of x with base b and result a, b^a = x. So for example, log(100) = 2.

Of course, now that I posted that, I realized that it wasn't exactly the expression I intended. A better one that should be relatively easy to solve assuming you know the properties of logarithms would be this:
(125log(5))/(log(2.5) + log(2))

The basic properties are as follows:

log(a) + log(b) = log(ab)
log(a) - log (b) = log(a/b)
a * log(x) = log(x^a)
log (base b) of x = log(x)/log(b) (It's hard to express the base here because I don't have access to subscripts.)

Of course, I kinda feel like I'm intruding on your thread here. Not sure if you meant this as a specific discussion about factorials or a place to talk about mathematics in general and quiz each other. 

Im still really confused on log. What is ^ mean?

"To the power of--"

Basiacally, 9^2=9²=81

What math are you taking? Does it help being in a higher math level with scratch?

so 8^2=64

Harakou wrote:

JJROCKER wrote:

so 8^2=64

Yup!

JJROCKER wrote:

What math are you taking? Does it help being in a higher math level with scratch?

I'm taking Pre-Calculus right now. I'd say it can come in handy; trigonometry is particularly useful in some situations and a good understanding of algebra can be useful in developing some algorithms and equations in scripts.

Thats good.

Harakou wrote:

JJROCKER wrote:

Harakou wrote:

JJROCKER wrote:

so 8^2=64

Yup!

I'm taking Pre-Calculus right now. I'd say it can come in handy; trigonometry is particularly useful in some situations and a good understanding of algebra can be useful in developing some algorithms and equations in scripts.

Thats good.

What about you?

Now I am a little embarrassed but I am starting Algebra I

Thats cool

lol but your pretty good at it.

scratch_yoshi wrote:

What grade are you in, anyway?

I don't really want to share that kind of stuff on the internet.

JJROCKER wrote:

Lets keep talking about math, its fun

Well, if you're just starting algebra, let's see what you know! Have you started solving equations for variables yet?

JJROCKER wrote:

Like 5x+1,000=9000?

Exactly like that.

Harakou wrote:

JJROCKER wrote:

Like 5x+1,000=9000?

Exactly like that.

You could quiz me on some other stuff too.

Harakou wrote:

Yes, it would be 1,600. Would you be able to solve something like this?

(4(x + 5))/6 = 20

25 right? I was a little confused on how to do it though. Do you think you could explain it step by step?