Thread: Birthday Equation

It's my friend's dad's birthday and we wrote him an equation to which the answer is his age (he doesn't know that). It's nothing spectacular, we only had like 15 min and this probably child's play to most of you, but try to find his age. btw we are only in precalc so no complex concepts.



LaTex doesn't really make this evident (probably due to my lack of knowledge of LaTex) but i is to the power of (log 10^17)(-2)(cos 14pi/2).

Originally Posted by Cleverusername

It's my friend's dad's birthday and we wrote him an equation to which the answer is his age (he doesn't know that). It's nothing spectacular, we only had like 15 min and this probably child's play to most of you, but try to find his age. btw we are only in precalc so no complex concepts.



LaTex doesn't really make this evident (probably due to my lack of knowledge of LaTex) but i is to the power of (log 10^17)(-2)(cos 14pi/2).

Since g is a constant the requested derivative is 0. You have a biological rarity if your friend's dad is a newborn.

Haha!

Originally Posted by DrRocket

Since g is a constant the requested derivative is 0. You have a biological rarity if your friend's dad is a newborn.

g has an x to a power greater than 0 in it, and even if it didn't when you plugged it into f(x) you would get an x with a power greater than 0. I'm probably misunderstanding something, my knowledge in this is limited so please excuse my ignorance

Originally Posted by Cleverusername

Originally Posted by DrRocket

Since g is a constant the requested derivative is 0. You have a biological rarity if your friend's dad is a newborn.

g has an x to a power greater than 0 in it, and even if it didn't when you plugged it into f(x) you would get an x with a power greater than 0. I'm probably misunderstanding something, my knowledge in this is limited so please excuse my ignorance

No, it doesn't as you wrote it. There is no "x" to the right of "=" in the expression for g(x).

Originally Posted by DrRocket

No, it doesn't as you wrote it. There is no "x" to the right of "=" in the expression for g(x).

-_- my bad. it should be 18 * x^i^(log 10^17) etc...

I will try to fix it as soon as I can. going to have to rewrite the whole thing because it's an image

Okay here is the correct one. I added an x as well as fixed the factorials.

2 things that the LaTex shows in a weird way that I couldn't fix are

1. i is to the power of (log 10^17)(-2)(cos 14pi/2), i is NOT multiplied by those.

2. it is log 10^17, not log (10^1) 7.

You can post Tex code here using the [ tex ] tags.

Originally Posted by MagiMaster

You can post Tex code here using the [ tex ] tags.

I know, but it kept on saying something along the lines that the code is dangerous. I looked up how to fix the issue but nothing worked so I just used the image.

Remember that [ tex ]x^2 +3[ /tex] renders whereas [ tex ]x^{2+3}[/ tex] renders .

And just as well it makes that distinction too!!