20leunge

20leunge commented,
This is a long post, so I've italicized questions and bolded answers. Let me know if there are any mistakes. The first thing to realize is that we are dealing with finite arithmetic series, that is...

20leunge commented,
Here's how I see it. Let x represent the time Rob intended to spend on the project. However, he spent 100% of that times AND 25% more, so 125% of the planned time. So the time Rob actually spent wa...

20leunge commented,
RowanH: In general, x+y ≠ x+y. Consider x = 1, y = 1. x+y = 2 x+y = 0. So. x+y ≠ x+y because 2 ≠ 0. zineb.aj: I'm not sure why you wouldn't want to remove the absolute value sym...

20leunge commented,
First, solve x^2=a^2. Take the plus and minus square root of both sides. The negative root is needed because when that is squared on both sides, you still get back the original equation. ==> x=a, x...

20leunge commented,
All four solutions: x=2, x=3, x=((1+sqrt(17))/2), x=((1sqrt(17))/2). You have to solve for 3x5=((x1)^2) and 3x5=  ((x1)^2) because of the absolute value sign on the 3x5. Plugging in the so...

20leunge commented,
Just looking at the partial derivative with respect to x, I believe the chain rule is being applied to Q, and then to R along with the product rule. The chain rule is being used because z is itself...

20leunge commented,
I would say differential calculus.

20leunge commented,
What I did was I skipped this part and continued learning until I finished the combinatorics section from Precalculus. Then, I went back and learned it. It's not exactly a recurring topic throughou...

20leunge commented,
I imagine you would have to use the Lambert W function, but I'm not familiar with it.

20leunge commented,
If you know the mass of water lost, you can calculate using stoichiometry the moles of water. Oxygen has a molar mass of 16.00 grams per mole (g/mol) and hydrogen has a molar mass of 1.01 g/mol. In...

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