Finally a confident teacher

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Tysm! I’m trying to prepare for finals and this really helped

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@redplanettrees8284

9 ай бұрын

🦍

@sushituna5070

9 ай бұрын

🙊

Thank you so much

THANK U BRO LIFE SAVER

Thanks sir

Please help me find the coefficient of x^2012 in the polynomial f(x) = ∏[x^(2^k) + 2^k] product from k = 0 to k = 10.

@1TrollaSourasRex1

3 жыл бұрын

did u find it

@bryanramirez460

3 жыл бұрын

@@1TrollaSourasRex1 pretty sure it's too late bruh

@1TrollaSourasRex1

3 жыл бұрын

@@bryanramirez460 ay bruh I’m just invested in knowing whether this guy found it or not

So my a is (x^-1). And they want the coefficient of the term containing x^12 So it would have to be -12 times -1 for the exponents So then I’ll have (x^1)^-12 But you can’t put that negative 12 in a combination so now I’m confused ? Like you can’t say 8 choose negative 12?

@MartyBrandl

3 жыл бұрын

Hmmm...I'm confused too... Can you tell me more about the problem...or the solution if you already found it?

@Sonder_stoic

3 жыл бұрын

@@MartyBrandl so they gave me (1/x-2x^3) And I had to find the term containing x^12. It’s a binomial expansion problem and I was trying to do it a certain way, I ended up solving it with the binomial expansion triangle thingy, and I got my answer. It was like -1790 or something like that.

@MartyBrandl

3 жыл бұрын

@@Sonder_stoic Thanks for the reply! Great job not giving up and figuring out some way to do it!! 👍

thank youuuuu!

Wow. Nice vid very easy to understand. Youve just earn a subscriber

Thank you

thank you

Thaaaaaaanks mate!

But wt if only the coefficient of a binomial is given and asked to find the specific term(s)......

@MartyBrandl

Жыл бұрын

Can you give me a specific example?

TYSM

thanks man. precalc is not going so well rn

@MartyBrandl

Жыл бұрын

Hang in there! Keep working and seeking out extra resources like this! You can do it! 👍

Very Very helpful

Voice Sound similar to organic chem tutor

why 4 choose 1 is 4?????????????

@MartyBrandl

5 жыл бұрын

If we think about it, how many ways can we pick 1 from a group of 4? 4 ways, each one individually makes up the 4 groups. I hope that helps! Keep after it! :-)

@skipper4421

4 жыл бұрын

nCr: n!/ r!(n-r)! u can use this to solve for the combination

wait... how can you have a x raise to 12 in a binomial that only has 5 exponent? im confused????

@MartyBrandl

4 жыл бұрын

When we have a power to a power we multiply the exponents. So (x^3)^4 gets us the x^12. I hope that helps! Keep working at it! You can do it! :-)

8:58 haha no i cant!

@MartyBrandl

Жыл бұрын

Hang in there!! 👍👍