Coin 1 comes up heads with probability $0.6$ and coin 2 with probability $0.5.$ A coin is continually flipped until it comes up tails, at which time that ...

$$ r^2=\sec 4\theta $$ I graphed this equations using Wolfram Alpha and found it to be 2 hyperbolas. I'm having difficulty showing this using the sta...

What does it mean when the intervals of a function are increasing or decreasing? For example,w hat does it mean when it says a function is decreasing on t...

How many combinations are possible in the game tic-tac-toe (Noughts and crosses)? So for example a game which looked like: (with positions 1-9) A1 -- B1 A...

I am seeking to evaluate $\int_0^{\infty} f(x)/x^2 \, dx$ with $f(x)=1-\sqrt{\pi/6} \left(\cos (x) C\left(\sqrt{\frac{6 x}{\pi }} \right)+S\left(\sqrt{\fr...

Im looking to mix two particle sizes of powder metals, and need to calculate the resultant average particle size. O.K. More specifically: I mix 50 pounds ...

In the following equation of an ellipse what does "c" stand for? I first thought it is just some scale factor but I am not sure. I know that normally the ...

I would like some clarification about the Cantor Set: What are the elements in the Cantor Set? How do I write the Cantor Set in mathematical terms (i.e in...

Using two different sum-difference trigonometric identities gives two different results in a task where the choice of identity seemed unimportant. The tas...

I am trying to create a vertical line in my calculator, but it needs to be restricted to a certain height. I have an equation with a very high slope and I...