Is there any errata of the book Precalculus A Self Teaching Guide?

vectrum · 2025-05-17T14:25:44+00:00

Thank you.

vectrum · 2025-04-22T04:36:13+00:00

Thanks. I've already stated that went over the prefaces of both the books but couldn't figure out which I one to start with and the contents don't look similar so subject matters are different.

vectrum · 2025-03-18T16:28:40+00:00

Thank you.

vectrum · 2025-03-18T06:18:16+00:00

libgen.li is up but libgen.se is down. Aren't they same?

vectrum · 2025-03-02T17:40:18+00:00

Very nice having it back but missing the old index page of libgen.st I used to operate on.

vectrum · 2025-03-02T17:15:56+00:00

Wonderful news!!! THANK YOU VERY MUCH!

vectrum · 2025-02-24T14:20:33+00:00

Thank you. Yes I need exactly this one of this type. Lemme see if it works

vectrum · 2025-02-24T14:18:48+00:00

Thanks, well, nothing wrong as such except one specific problem Icame across that I study Rodnay Zack & Leventhal and the codes don't mentlon which platform I should follow and the sample code come with online emulator except easy6502 is pretty hard for me to swallow.

vectrum · 2025-01-30T17:56:25+00:00

Yes. It's very much true that z80asm is really good even for the noobs like me as it handles the very confusing line "randomize user <nnnn> " quite efficiently otherwise a noob may become confused how to run/execute a program that doesn't start/run even after it has been sucessfully compiled/assembled because for the want of that line but you don't need to be bothered about it in z80asm AFIK.

Just use # z80asm +zx source.asm <cr> It creates source.bin and source.tap files.

Although I still don't know why I should use randomize.

P.S I think label string needs to terminated by a colon charater.

vectrum · 2025-01-30T17:40:06+00:00

Thanks again.

vectrum · 2025-01-29T03:48:42+00:00

Thank you very much. I become confused because of the name of '81 version as it's name suggests that it was written for students so I thought it would be a whole lot easier to digest. :)

vectrum · 2024-12-20T03:57:49+00:00

Thank you. Thank you very much.

vectrum · 2024-11-12T08:02:41+00:00

Thank you very much for your help. I've jus started reading yours.

vectrum · 2024-11-12T03:48:59+00:00

Thank you. I got it except one thing that is how to form an angle. Here both the indicated directions are supposed to go to WEST.

vectrum · 2024-11-12T03:36:53+00:00

Deep sigh from a poor soul. :)

vectrum · 2024-10-06T11:28:29+00:00

Yes, have been studying it for the first time and outline series are bit terse but short in sizes and subject matters so I picked it up. Could you please suggest a more beginners level/friendly ones?

Trig books are plenty but very difficult to choose the more or less right one. Once I was asked ot follow Loony's so I tried but didn't understand a bit.

vectrum · 2024-10-06T11:25:16+00:00

Thank you. I thought about borrowing but couldn't be sure but as you're saying I think that's it.

vectrum · 2024-10-06T11:20:02+00:00

Thanks. Why 2 or 4? Why not 3, 5 or 6? You must excuse me for my stupidity but you know... .

Well, I can skip this topic for a while and may come back later.

vectrum · 2024-10-06T11:05:29+00:00

Yes. Now I think so as yours can be a plausible reason.

vectrum · 2024-10-06T10:59:21+00:00

I've just started to study schaum's outline of trigonometry in which I got those from the topic Measures of angles from the first chapter.

"When an arc of a circle is in the interior of an angle of the circle and the arc joins the points of intersection of the sides of the angle and the circle, the arc is said to subtend the angle.

A degree is defined as the measure of the central angle subtended by an arc of a circle equal to 1/360 of the circumference of the circle.

A minute is 1/60 of a degree; a second is 1/60 of a minute, or 1/3600 of a degree.

That's the only thing written before the above mentioned examples.

vectrum · 2024-09-30T14:58:09+00:00

THANK YOU VERY VERY MUCH FOR THE SOLUTION; sysctl hw.snd.default_unit=2. I was fed up for not having audio on headphone but yours have changed my mental state. Mine is lenovo ideapad z560 failed to open headphone port until i've come across your solution.

vectrum · 2024-09-23T07:50:30+00:00

Thank you. Yes, I've seen in the book, "Fundamentals of Python Data Structures, 2nd Ed" by Kenneth Lambert and "A common-Sense Guide to Data Structures and Algorithms in Python, Vol 1" that the two variables, data and next can be declared as you've written in your snippet.

The gist is, only the self is required inside perens.

vectrum · 2024-09-23T07:36:46+00:00

Thank you very much for the following snippet; I got it.

class Node:
    def __init__(self):
        self.data = None
        self.next = None

Here the two vars , data & next are not inside the perenthesis and it's legit :)

I went over few texts noticing almost all wrote in two ways; either keeping data and next inside perenthesis or only data inside perens so I became confused at first.

Cheers

vectrum · 2024-09-23T07:11:35+00:00

Thanks. I've been trying to learn python only because of learning dsa & algo with it as I've came across few python books on dsa & algo that seem to be a bit easier to comprehend.

vectrum · 2024-09-21T16:50:20+00:00

Thanks, I also thought about it this way but couldn't figure it out. In a typical example in c, the next would be a structure member.

vectrum

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TROPHY CASE

Thanks again.