Muttley600
New Member
#24 was also on the mark.
Spot on
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#24 was also on the mark.
not having basic math skills was a major turn of events and so was that you like pictures. Determining learning style is USUALLY one of the first things I try to ascertain when trying to teach someone something, Initially I was monitoring for correctness. Then the next step is to define the terminology and there is difficulty there too.
r^2 somewhere was mentioned as the radius of a circle squared.
I know I mentioned somewhere the parametric equations of a circle and the XY form of a circle. Maybe it's time to revisit that again.
Parametric: x=sin(θ); y=cos(θ) is the parametric form of an equation of a circle
x-y: X^2+y^2 = r^2 is the equation of a circle with radius r.
Post #122 is confusing. I tried to answer what I could.
With the last paragraph, you need to start over.
Z was mentioned somewhere long ago, BUT you have to have the right triangle thing down first before we can go there. Are you ready?
If you are, we also have to introduce Vectors and scalars first as a pre-requisite and I'll do so by deviating from Electronics for a bit.
You have a few things under your belt such as CHA(t)
θ, ∏, angles, right triangles, frequency getting formatting right, period, wavelengh, (speed of light),
(phase), Resistance, ohms law,ohms law for AC circuits), (equations of a sine wave with phase added), ratios, (interpolation), Time constant,
[infinate series], (derivative), (integral), [negative resistance], (exponentiation), (Factoring),
(square roots), (cube roots), (nth roots), (db), (logarithms), (-3db point), (understanding of db), (using a scope), (interpolating)
(using cursors), (using the SIM), (Radians), (degrees), (sine), (cosine), (tangent), (their inverse functions), [Identities], (what ^means), [using logarithms], (Basic math - solving simple equations), (dimensional analysis), (units), (rounding), (rational numbers), (irrational numbers), (factoring), (unit conversion), (complex numbers)
The things in () I don't think you quite understand or hasn't been covered.
[ ] not covered and will not be covered.
That's a lot of stuff we touched on. CBB, Graham, can you think of others?
Muttley=600 said:ok, instead of multiquoting you a million times, I've colour coded this lot, red has not been covered yet or I don't even have a basic understanding of it or if we have covered it, I'm not relating the name to the subject
dimensional analaysis might just be terminology. We covered it in when we found that the units of R*C is time.
Remember?
Identities are things that are sort of known to be true. sin^2(θ)+cos^2(θ) =1 was a simple identity. Try it on your calculator.
Variables
Just like you learned V is for Voltage, I current and R resistance and x is the x-axis and y = the y-axis these are just"customary labels".
With Math θ and ∏ have meanings and so do x and y.
K is used in a lot of places to just denote a Constant value. k is a specific constant known as Boltzman's constant. c is the speed of light.
Although some need to be used in context. It's just science/Math vocabulary. e is a specific constant too.
n usually means an integer value. In programming you might see for i = 1 to n. i being index and n being the last number. m in math typicaly denotes the slope and it's from the formula y=mx+b where b is the y-intercept. This is the part I goofed up on because I assumed you knew most of if from basic math
My reference was "high school math", however, I failed to differentiate business and college prep and I don;t know what the difference was. There was Remedial algebra, Algebra 1, Geometry, algebra 2/trigonometry, pre-calculus and calculus in my high
What you took was a crap-shoot, but it depended on what you had. I transferred schools, so they didn't know where to place me.
Graham missing the stuff that I learned in grade school really floored me.
LOGarithms we covered a little with the discussion on manually doing a square or cube root and db. Power and Voltage db hasn't really been covered to the point that you understand it. This is still an iffy area and it is cause of some struggle. The concepts have not been adequately covered.
Find the cube root of 55 using logarithms?
As for machine shop skills unless your just an operator, trigonometry is usually needed and so is converting to polar/rectangular coordinates. Yup, been there done that. Full machine shop privs except welding although I've had a Tig, Mig and stick in my hand at least once and did very well. Someone else did the set-ups, just like I did for some people using the machine shop.
Examples: A bolt circle without using a dividing head.
CNC and x-y positioning.
Now my math ain't that good but you don't mean 15mm do you.lol maybe 1mm