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    Basic rules of algebra (Manipulating equations and such)

    Hi, im a grade 12 student, finishing my advanced functions at the moment, in a few short weeks i shall be taking calculus, in my last trig unit my teacher remarked that although i did well, i should brush up on my 'basic rules for algebra' from what i understand this is stuff that i dont really...
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    Roadmap to Electrician apprenticeship

    I'm a current high school student, thinking about becoming an electrician, i understand you have to get an apprenticeship in order to become an electrician, what is the roadmap or the process to get an apprenticeship? Do i go to college and study in a program like "Electrical Engineering...
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    Trig identities (is my method correct?)

    Homework Statement Prove the following identities 31c) sin(\frac{\pi}{2}+x)=cosx Homework Equations sin2x+cos2x=1 The Attempt at a Solution The idea here is to prove the identity by making LS=RS so here is what i have done, but im not sure if it is the right way, since the book shows it...
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    Solving inequalities algebraically, when root is 0

    oh hey...i think your right...even if just move in the general direction it will tell me weather or not its positive or negative... and then i can multiply all the postives/negatives and determine weather the graph in that interval is above 0 or below 0 thanks
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    Solving inequalities algebraically, when root is 0

    Homework Statement Solve each inequality without graphing the corresponding function. State the solution algebraically and graph on a number line: x/x2-9≤0 so i factor out the denominator and get (x+3)(x-3) the root here is zero, but for some reason in the chart (for rational/reciprocal...
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    How do i factor cubic trinomials?

    well..given the fact that they have 2 seperate distinct terms to define them(trinomial and polynomial), and they dont really use it all under the umbrella term ' polynomial' i didnt really know that they are the same thing, at least until now #edit do quadratics fall under polynomials as well??
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    How do i factor cubic trinomials?

    you mean, trial and error?(i guess factor 'theorm'?) where after trial and error you see what turns the equation into a zero, and use that monomial to divide the equation, and via long division you find the other factor(and you then have 2 factors) If so...i thought you could only use long...
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    How do i factor cubic trinomials?

    Homework Statement x3-13x+12=0 The book shows the following solutions, i should add that i have very little practice with factoring cubic TRINOMIALS, you see i factor trinomials through an intuitive understanding, i tried staring at the problem a few hours yesterday, tried youtube/google for...
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    Solve this quadratic equation

    Homework Statement 3x2-8x-1=0 Homework Equations The Attempt at a Solution So here i attempt to solve the equation...usually the way i go about this is you multiply 3 by -1 you get -3 then i ask myself what multiplies to -3 and adds to -8.....after that i am able to solve...
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    What is the inverse of this logarithm equation?

    Homework Statement What is the inverse of this logarithm equation? y=-log5(-x) i tried it and i got y=-5(-x) hm.. you know how people say that if you want to find the inverse graph of something just switch the x and y coordinates from the table of values? Well i also tried that approach...
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    Mathematician vs Engineer

    Engines, what kind of engineers work on that?
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    Math Would it be possible for a mathematician to do this?

    hm...so you say that most actuaries have an undergrad degree in mathematics?
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    Math Would it be possible for a mathematician to do this?

    so what is the difference between a mathematician and an actuary? Identical training and stuff? Could i be an actuary if i am a mathematician with a phd? in terms of becoming an actuary...what is the career path one takes through school?? for instance for a mathematician they would have to...
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    Math Would it be possible for a mathematician to do this?

    hm... so what is an actuary? Is it like an advanced version of an accountant? Also the reasoning behind me going into strictly mathematics is not that i want to do technical work...it is that mathematics is at the center of everything...from engineering to physics...to finance etc.... sure...
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    Math Would it be possible for a mathematician to do this?

    So last year i was in grade 11....and i wanted to be a mathematician, i figured id start out with undergrad in a mathematics program and eventually work my way up to a phd in mathematics and become a mathematician....however i read a joke on these forums which i sort of took to heart and became...
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    Do you need prior experience for apprenticeship?

    Say for an electrician or a mechanic? just out of curiosity I mean just to get you started...because one has to start somewhere...right?
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    Engineering Mechanical vs Aerospace engineering

    @ mr astronuc Iv heard 'horror stories' regarding engineering in general, im assuming your an aerospace engineer, how is the program or was when you were in school? how intense was it? How many hours a day on average did you study? If there was a concept you didnt understand fully, were the...
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    Engineering Mechanical vs Aerospace engineering

    yep, only carleton or u of t offer aerospace engineering....anyway you say your a 3rd year aerospace eng student, how is it? the program...the studies...how helpful are the proffs/teachers assistants?
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    Engineering Mechanical vs Aerospace engineering

    Is it true that the 2 have a lot of overlapping curriculum? At least that's what i have heard, can an actual Aerospace engineer comment on this as well? I ask because i want to go into aerospace engineering but up here in canada, there are like 2 schools in the entire country that offer the...
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    Genetics and professions

    so in other words, genetics DO play a role in this scenario?
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    Genetics and professions

    Do our genes have memory? Say that my grandfather was in finance, and my father was in finance, and i too am in finance, and have a keen interest in it, will my child have an edge in the field of finance, over the competition because 3 generation of people went into the same field...and...
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    Medical Is alcohol harmful for your brain?

    what do you mean? Is this a symptom of something?
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    Medical Is alcohol harmful for your brain?

    For an occasional/recreational user, is alcohol consumption once in a while harmful for your brain? I googled and i couldnt really find a straight answer, i read somewhere a while back though that Richard feynman never drank alcohol or did any drugs(he wanted to experiment with LSD) because he...
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    Transformations of exponential functions

    ohhh... its for horizontal stretching...thanks!
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    Transformations of exponential functions

    well according to that, a is for vertical stretching but, if that is the case, then what is c for?
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    Transformations of exponential functions

    Homework Statement Im not sure what each of the variables do in y=cax-p +q Homework Equations The Attempt at a Solution my understanding is that -q is for vertical shifts/transformations -p is for horizontal shifts/transformations -and c is for vertical stretching not...
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    Inverse function of a quadratic and a cubic function?

    yeah, its simple the vertical line test, what i am trying to figure out is how to get the points so i can graph the inverse function for question 25. The book says the inverse function is y=3√x
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    Inverse function of a quadratic and a cubic function?

    ok i was able to solve 24 on my own..still no news on 25 though
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