precalculus & translating algebraic concepts to the visu

Page 1 of 1 [ 7 posts ] 

jlefholtz
Tufted Titmouse
Tufted Titmouse

User avatar

Joined: 15 Oct 2007
Age: 44
Gender: Male
Posts: 34
Location: Chicago

15 Apr 2009, 7:35 am

I have a very hard time with some of the trig aspects in precalc. I'm good with anything that just involves numbers, logarithms and trig identities, until I bring the unit circle into the picture. I just can't grasp it. I think it has to do with the visual representation of the numbers, the visual and the numeric are very separate concepts to me. Has anybody else had this problem? I thought aspies were supposed to be good in math. :(

Could somebody explain this to me? I don't connect with my classmates well enough to ask them and going into my prof's office hours stresses me out because I know I act weird when I interact with strangers one-on-one.



zeichner
Supporting Member
Supporting Member

User avatar

Joined: 10 Sep 2008
Age: 66
Gender: Male
Posts: 689
Location: Red Wing, MN

15 Apr 2009, 8:00 am

There is a series of study guides called "...The Easy Way" - the one on calculus is excellent. It relates all the concepts through a fantasy story about a mythical kingdom. Very visual. As I remember, it starts out reasonably slow & covers some trig & algebra concepts. (They also have a similar book on Trigonometry, which might fill in the gaps.)


_________________
"I am likely to miss the main event, if I stop to cry & complain again.
So I will keep a deliberate pace - Let the damn breeze dry my face."
- Fiona Apple - "Better Version of Me"


jlefholtz
Tufted Titmouse
Tufted Titmouse

User avatar

Joined: 15 Oct 2007
Age: 44
Gender: Male
Posts: 34
Location: Chicago

15 Apr 2009, 8:08 am

I actually have that book for Intermediate Algebra. I used it to skip College Algebra and get into precalculus via placement test. I'll get it! I have precalculus for dummies and another book from Baron's educational series on precalculus but they're not as helpful.

Thanks :)



Kangoogle
Veteran
Veteran

User avatar

Joined: 3 Jan 2009
Age: 35
Gender: Male
Posts: 903

15 Apr 2009, 1:52 pm

jlefholtz wrote:
I have a very hard time with some of the trig aspects in precalc. I'm good with anything that just involves numbers, logarithms and trig identities, until I bring the unit circle into the picture. I just can't grasp it. I think it has to do with the visual representation of the numbers, the visual and the numeric are very separate concepts to me. Has anybody else had this problem? I thought aspies were supposed to be good in math. :(

Could somebody explain this to me? I don't connect with my classmates well enough to ask them and going into my prof's office hours stresses me out because I know I act weird when I interact with strangers one-on-one.

Equation of unit circle: x^2 + y^2 = 1
Trig idenity: cos^2(theta) + sin^2(theta) = 1

The idea with the unit circle is that if you get x=cos(theta) and y=sin(theta), then those two equations are analogous.



Lonermutant
Veteran
Veteran

User avatar

Joined: 17 Dec 2005
Age: 51
Gender: Male
Posts: 1,724
Location: Namsos, Norway

16 Apr 2009, 1:06 am

Drop out, get a job.



jlefholtz
Tufted Titmouse
Tufted Titmouse

User avatar

Joined: 15 Oct 2007
Age: 44
Gender: Male
Posts: 34
Location: Chicago

16 Apr 2009, 7:43 am

I did that for ten years already. With my skills not getting me anywhere but the service industry and customer service, both of which I abhor, I am getting my bachelor's.

And I have a job.



jlefholtz
Tufted Titmouse
Tufted Titmouse

User avatar

Joined: 15 Oct 2007
Age: 44
Gender: Male
Posts: 34
Location: Chicago

16 Apr 2009, 7:45 am

Kangoogle wrote:
jlefholtz wrote:
I have a very hard time with some of the trig aspects in precalc. I'm good with anything that just involves numbers, logarithms and trig identities, until I bring the unit circle into the picture. I just can't grasp it. I think it has to do with the visual representation of the numbers, the visual and the numeric are very separate concepts to me. Has anybody else had this problem? I thought aspies were supposed to be good in math. :(

Could somebody explain this to me? I don't connect with my classmates well enough to ask them and going into my prof's office hours stresses me out because I know I act weird when I interact with strangers one-on-one.

Equation of unit circle: x^2 + y^2 = 1
Trig idenity: cos^2(theta) + sin^2(theta) = 1

The idea with the unit circle is that if you get x=cos(theta) and y=sin(theta), then those two equations are analogous.



Thanks Kangoogle. I'll try to integrate that info with what I know. :)