# basic

1. ### Basic math equation help.

In the equation x = n / f n is 1 kg m^-2 and f is 1 kg m^-1 What is x? This is just confusing my poor brain, any help to understand would be much appreciated. I put what I thought the answer was as x = 1 kg m^2 but I'm told the numerical value is correct but the unit is incorrect...
2. ### Pretty basic Pythagorean & Trigonometry

Hi, It's probably gonna be a pretty simple thing to solve for you but I'm not that good in math so I'm really thankful for any help that you can bring me. Long story short (refer picture below): As you can see we have two circles forming two right angled triangles with a third one. The...
3. ### Hi all, I have a very basic question :D

Hi all, you are my biggest hope :D This is probably really dumb, but I have the following problem and my stats courses are just too long ago: I need to visualise the change of surface area of two bones (A and B) over time. So, for example, in one dinosaur, bone A is 300 cmÂ² in surface area and...
4. ### Basic limit with exponent

How can I prove the equality ? \lim_{k\rightarrow \infty} r^{k}=\lim_{k\rightarrow \infty } |r^{2}-r|^{k^2 }\: ; for 0< r \neq 1 .
5. ### Very basic solution help.

Hello it has been a while since I have engaged mathematics formally. I am trying to determine my odds of winning a contest. I had 1/300 chance of winning, and then received 1000 entries. This gave me 1/194 chance of winning. After receiving another 200 entries, I had a 1/181 chance of...
6. ### Basic geometry info (transversals and angle relationships)

Found these vids on youtube. hopefully they help somebody going thru this https://www.youtube.com/watch?v=CTPSs6P-8kA&list=PLanVcrvkL5E_IhudxOX-oqpLBMABTq8QX
7. ### Requesting for some insights about Fourier transform basic

I am studying the Fourier transform and trying to understand the following equation w is frequency.. t is time.. A(w) is a a signal amplified function delay(w) is a time delay function Trig Identity: sin( a + b ) = sin(a)cos(b) + sin(b)cos(a) Therefore: A(w)sin((wt + delay(w))) =...
8. ### Basic math & Algebra

Iam usman ghani from pakistan . I love the mathematics very much. Sent from my HUAWEI TIT-AL00 using Tapatalk
9. ### Basic Limit

Check whether I derived correctly y' \xi \rightarrow \Delta y = y(n+\xi ) - y(n) Set y=e^n and \xi =\frac{1}{n} \frac{1}{n} (e^n )' \rightarrow e^{n+\frac{1}{n} } -e^n or \frac{e^n }{n} \rightarrow e^n (e^{\frac{1}{n} } -1 ) \frac{1}{n} \rightarrow e^{ \frac{1}{n} } -1 1+\frac{1}{n}...
10. ### Basic maths question help

Hi guys, I'm new here and wondering whether any of you kind smart folk could help me out with these admittedly somewhat easy questions. I struggle with maths and want to make sure my answers are correct. If this is in the wrong section, then mods please move. I have had technical difficulty...
11. ### Degenerate feasible basic solution

In Linear programming a degenerate basic feasible solution leads to no increment of the objective function. How , intuitively, the fact that a degenerate solution has at least one variable = 0, it's connected with the fact that it leads to no increment of the objective function ?
12. ### Basic Geometry HELP!!!!

I need to find "D" area please refer to attachment
13. ### Basic limits

1)\lim _{x\rightarrow 0} \frac{(x-\sin x )^n }{x^ 3} \; \; , n\in N 2) \lim _ {x\rightarrow 0} \frac{\cos x - \cos ^\sqrt{7} x}{x^2 }
14. ### Trying to understand integration with very basic knowledge of derivation

I have to show that this equation is true, I know I have to find the derivative of the right side, but I don't know how to find derivative of the square root.
15. ### which software is good for visual basic

Hello which software is best for visual basic?
16. ### Three sided coin ( basic math question)

In this PDF there is a comparison of different models describing 3-sided coins. Now,on page 3 Model 1 is pretty clear, to calculate the probability (of the flipped coin landing on its side ) they consider coin side surface area to the total surface area ratio. Model 2 is a bit...
Recently, I have just learnt a bit about the basics of trigonometry and have some questions about it. Such as why is it when 2cos(Î¸)=âˆš2, it will be cos$^{-1}$(âˆš2 /2) Thanks.