Algebra help .

So far my understanding of what I just learnt is that 1a+1a=2a
1a-1a=0a

1a+1b= can not be done.

My first question is what do the letters represent?

 

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Sorry! I know what they mean now , I think I understand Algebra seems easy enough.

seems has it is a maths topic, why would we want know the area of an odd shape or area under a curve in Calculus, what is its uses?
And is that all Calculus is working out odd shapes areas?

 

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Find out a bit more and you might discover the uses.

 

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Figuring out the area of a wing, so you can design it out of sheet metal.
Figuring out how much water you need to fill an odd-shaped pool.
Figuring out how much paint you need to paint something.
Figuring out how to design an efficient engine.

Once you get into (say) Maxwell's Equations, you might find it useful to design generators, transformers and antennas.

 

Ok will do, in learning maths it is no good learning something like maths without practice, will someone kindly post a few simple algebra questions to see if i can answer them? not the calculus at the moment because I can work out the area of a stupid shape without any claculus and angles without calculus.

 

You're doing it again. Please "work out the area of this stupid shape":

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http://tutorial.math.lamar.edu/Classes/CalcII/SurfaceArea.aspx

 

I said avoid calculus for now , but what value do you want the answer in cm, mm, meters, miles, what is the scaling of the diagram?

Do you want just the face area?

 

And I said you're doing it again.

Please support your assertion that you can do this. Units are irrelevant, but of course you know this because you're so much smarter than all of the "science guys".

Here is the problem stated in algebraic terms:
Determine the surface area of the solid obtained by rotating

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,

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about the x-axis.

I await your analysis.

 

I said avoid calculus because I wanted to practice some basic algebra, the maths you have put there is beyond my maths knowledge at the moment,
It will take me a long while to work it out my way if you want the full area of the entire shape including a top view and a behind view, I meant 2 dimensions shapes, so in saying that I will tell you how I do it/did it when asked similar on another forum.
I simply the same as I did with this diagram , downloaded the image, opened it with bitmap, turned on rulers and grids, then simply counted the squares of the grid that the shape was .
That is why I said for now leave Calculus until I have learnt more about it, I can see its uses for 3 dimensional shapes.

 

Then stop making foolish boasts

or no one will help you at all and you'll soon be back to proclaiming 1=0=6=3

 

I see your point, I do have a stage one answer for you of your shape and I have it at 16*360=5760 approx. I would just need to stretch the curve out to get an exact.

Either way I am not ready for calculus, I need to try the Algebra firstly and practice that to be assessed if I am doing it correctly.

 

So what text book, or online course are you using to teach yourself algebra?

 

Ten minutes of youtube seemed enough to understand it, no books, just a visual that give me the information I needed, I need to practice first the basics then advance on to complex.

 

The human being is a beautiful creation of art....And always remember "information is useless with out comprehension."

 

a+b to the power of 3 ,

 

Are you saying it is cubed?

a+b=ab=ab*ab*ab

 

I looked up expand, a+b*3 in your original one is that correct?

and your second answer is a+b2 , the 2 suppose to be risen though. I do not know how to do that.