Recent content by quicksilver123

Could I get a conceptual answer, supported by math, explaining why coax has less characteristic impedance than open wire feeds?I’m new to EE. Thanks for you patience.

Sorry to ask but could you please do the work they did or annotate it? It would help

The tutor wrote that out I think the compressive strength is the inverse of the bulk modulus? Could someone walk me through the problem solution? A few steps are skipped and the reasoning is not explicitly stated.

Hi, I'm afraid I not very good at these questions just yet and would like a walk through a bit better than the one I was given by my tutors. Thank you, please refer to the inline image.

Oh I see so this is not some convention, but merely indicating the points on the graph? I've just never seen an asterisk used before, they usually use a different letter value (a, b, c) to designate constants. Can anyone confirm the previous poster?

hi please refer to the inline image: What do the stars mean? I can't find a reference or definition elsewhere in my textbook...

Could you explicitly explain the correct method in terms of your liebnitz Rule?

The Lamar university web page on integration offers the same material and proof.

I can obviously do the chain rule and see how the final expression of the derivative is related to the original function but I can't seem to figure out the substitution Rule as an intuitive way of solving the indefinite integral of functions... bear with me if I'm too verbose, I've attached an...

Anyone confirm that the answer I got is correct?

Thanks

Hi, I may have discovered a textbook error but I'm no calc whiz. I need an assist to find out if the question unintentionally described a square instead of a rectangle. I have attached the textbooks solution as well as my attempt at a solution. The numbers check out, I just want to make sure...

I need to find the max/min of a function on an interval. The function is f(x)=x+cos(x) and the interval is <-PI,2pi> There is an attached solution but I do not understand how to arrive at the given solution (see screenshot). I would personally just take the derivative as F'(x)=1-sin(x) However...

Thanks. I don't know why I didn't see that.

That is the identity I used to expand the (x+h) terms but could not factor to the next step due to the sin(h) term... unless I made an error in my expansion that I haven't caught?