# Latest activity

• lookagain replied to the thread Need help.
I would advise you stay with MarkFL's posts However, consider another way such as this: Rewrite the integrand as: x^2(36x^2 -...
• Let's look only at the numerator of the difference quotient I wrote: \frac{1}{(x+h)^5}-\frac{1}{x^5} Combining terms, we get...
• Hello, and welcome to FMH! :) Let's begin with the definition of the derivative: f'(x)\equiv\lim_{h\to0}\frac{f(x+h)-f(x)}{h} In this...
• topsquark reacted to Dr.Peterson's post in the thread Weight amount with Like.
Yes, rounding error is an interesting possibility here; if the potatoes were both actually 29.5 pounds and the scale rounds to the...
• The standard way to solve this is with algebra (as Jomo did - but check for a sign error!); but since you put this under Arithmetic...
• Denis replied to the thread Algebra for economics.
Your equations as per DrP: C = C_0 + cY Y = \frac{C_0+I+G}{1-c} Your variables make my head spin... I'd change them, as example: a...
• Dr.Peterson replied to the thread Weight amount.
Yes, rounding error is an interesting possibility here; if the potatoes were both actually 29.5 pounds and the scale rounds to the...
• Dr.Peterson replied to the thread Algebra for economics.
You are (with a typo fixed) given this: C = C_0 + cY Y = \frac{C_0+I+G}{1-c} Here's the substitution, with an extra step or two shown...
• MarkFL reacted to topsquark's post in the thread Weight amount with Like.
I used to have similar questions. I once did a experiment with a simple circuit. I knew the source potential and the current in the...
• topsquark reacted to MarkFL's post in the thread Hw help with Like.