history_of_psychiatry wrote:
My whole life the sciences have always been natural for me but math has been difficult. What's weird though is that they say if you're good in one you are more than likely good at the other. It's not that I'm bad at calculating numbers, I just have trouble with all the formulas and multi step processing. This applies mostly to algebra. It seems like math has so many rules and exceptions to the rules. You're supposed to add here accept when you're supposed to subtract there. That is unless you're supposed to divide. This formula says to do THIS at all times. That is, except when you're supposed to do THAT. What algebra reminds me of is that one episode of "I Love Lucy" where Fred and Ricky are playing golf and Lucy and Ethyl want to play too. So Ricky and Fred make up all these fake and confusing rules that all contradict each other just to screw with Lucy and Ethyl. Anyone else here good at either math or science but lousy at the other??
Yes, I was bad at "math"and good at science. I pursued math for the love of science and as most of my difficulties were with arithmetic, I actually did well enough in upper mathematics to get a degree in it.
Algebra can be tedious but it has something called the order of operations. It's ok to write them down if you need to.
It goes
0. Parenthsis: Perform operations in these using the same order of operations first)
1. Multiply (this includes powers and square roots)
2. Divide
3. Add
4. Subtract.
And signs are always attached to the number on the right.
Example with no x: Simplify 4/2 + 5*(-1+3) +2^2 - sqrt(4)
0. Parenthesis: We have (-1+3). This is the same as (3-1), which is (4)
We have: 4/2 +5*(4) +2^2 - sqrt(4)
1.Multiply: 5*(4) is 20, 2^2 is 2*2 which is 4.and -sqrt(4) is -2
We have 4/2 + 20 + 4 - 2
2. Divide 4/2 is 2
We have 2 + 20 + 4 - 2
3. Add 2+20 + 4 is 26
We have 26 -2
4. Substract 26-2 is 24
So 4/2 + 5*(-1+3) +2^2 - sqrt(4) = 24
Also, in algebra you do to one side of an equations what you do to the other because changing one side of the equation is like changing a scale.
If you have a scale with 2 ten gram coins on one side and 4 five gram coins on the other, you have 20 grams of coins on both side.
If you add a 2 gram coin to one side, to keep the scale balanced you must do it to the other side.