Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [education]

For math questions related to the teaching and learning of mathematics. Note that Mathematics Educators Stack Exchange may be a better home for narrowly scoped questions on specific issues in mathematics education.

This tag is for questions that are primarily about mathematics, but are related to mathematics education. Also consider using the or the tag. On the other hand, questions that are primarily about teaching and learning mathematics would be a better fit for MathEducators.SE.

3309 questions
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Writing minimum equation

How can i write minimum number of a series as an equation? min(4, 2) = 2 or min([5, 1, 8, 6]) = 1 Like the following one ∑Xi
Don Coder
  • 111
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How to define applied mathematics?

In engineering, we use the term applied mathematics a lot. However, I've noticed that the exposure for proof is scarce. When I was an undergrad, even though the textbooks provided some details about some proofs, instructors tended to ignore them…
CroCo
  • 1,228
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2 answers

Logic Question (ladders and monkeys)

In a room five ladders are leaning against the wall. At the top of each ladder there is a banana, and at the bottom of each ladder there is a monkey. Some of the steps of the ladders are connected with ropes, but to each step at most one rope is…
Peter Kamel GN
  • 7
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1 answer

Proving A Combination Statement By Forming committees

$ \binom{n}{m}\binom{m}{m} + \binom{n}{m+1}\binom{m+1}{m} + \binom{n}{m+2}\binom{m+2}{m} + \cdots + \binom{n}{n}\binom{n}{m} = \binom{n}{m} 2^{n-m}$ I am completely lost on where to go. Any hints? Thank you very much!
Henry Huang
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2 answers

Elementary algebraic question

$$\frac{q^{n+1}-1+q^{n+1}(q-1)}{q-1}=\frac{q^{(n+1)+1}-1}{q-1}$$ I don't understand this step above, how can I get the right sight?
Herrpeter
  • 1,326
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1 answer

Rearrange to get subject

I am looking the rearrange the equation to get h2 as the subject. $$8-3.5 = (0.028)(h2 - 2724.9)$$ Now i have been dividing h2 both sides to get $$\frac{4.5}{h2} = (0.028(h2 - 2724.9)$$ But this doesnt seem right. Can anyone help please
Kyle Anderson
  • 45
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1 answer

formula or method for intermediate values within simple sequence?

I have a series of data points and I am trying to find out the formula to calculate what intermediate values might be, for example if A is 5, what value would B have? This seems like it's pretty easy, but I don't know the terminology for this type…
fuzzygoat
  • 101
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What does this mathematical expression mean?

I am reading a natural language processing paper and I came across this expression. I don't know what it means. Especially the unif part. $$m_i \sim \operatorname{unif}\{1,n\}\text{ for } i = 1 \text{ to } k$$
odbhut.shei.chhele
  • 351
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2 answers

What do the constants "4" and "2" in Bhaskara mean and where did they come from?

In bhaskar, the way to get the result, is to get the $\Delta = b^2 – 4ac$, and then the $X = (–b \pm \sqrt\Delta)/2a)$. But from where come these constants?
Neo son
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Which course should I take in my undergrad that also looks more challenging in my post grad Mathematics application?

Math 341 - Operations Research 1, or Math 409 - Calculus of Variations Also, which out of the two is more helpful generally that might also be used later in my masters and/or PhD? Can I have a little idea about what I'm going to be studying in these…
Syed Bukhari
  • 369
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1 answer

Calculation of calendar days

Is the day a child is born counted when calculating the calender days for his birthday? For instance, Kadogo was born on 4th January 2009.How old was he on 4th March 2011?
Makau Elijah
  • 93
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1 answer

Formula derivation for negative power

$$P={R * CCB \over 1-(1+R)^{-t}}$$ P stands for monthly payment, R is the interest rate,CCB is the initial credit card balance,t is the number of months until the debt is paid. I would like to derive the formula for t ! $$-(1+R)^{-t}={R*ccb \over…
Bharadwaj daya
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2 answers

Calculation of the difference in duration mm:ss:ms

Please could anyone provide an easy formula to manually calculate the difference in duration in the format of minutes:seconds:milliseconds ? For example, how to calculate the difference between the following durations - 02:06:84 -…
user501622
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1 answer

Calculating techniqes faster than calculator

There are some techniques for calculating faster than calculator,so I want to know some of then like dividing and multiplying which are faster. Here is a video of competition how small children do calculation…
Fawad
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1 answer

How do you solve this trignometric equation?

How to transform equation $(1)$ to equation $(2)$? $$u(r,t)= -\frac{Ak}{r} \left[ \frac{1}{kr} \cos k(ct-r)-\sin k(ct-r) \right] \tag{1}$$ $$u(r,t)=\frac{A}{r} \sqrt{\frac{1}{r^2}+k^2} \sin[k(ct-r)-\theta] \tag{2}$$ where $\tan…
ezE
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