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# Is there a "checking method" for differential equations? watch

1. We work with differential equations a lot in FP2, so I was wondering if there was a "checking method" to check whether the differential equations are correct?
2. Input the values?
3. Yes. Differentiate (possibly twice depending on question), then substitute back in and verify.
4. (Original post by Mentally)
Input the values?
Can you make up an example? I'm not quite sure what your referring to exactly
5. (Original post by DFranklin)
Yes. Differentiate (possibly twice depending on question), then substitute back in and verify.
Can you make up an example? I just want to make sure I know exactly what your referring to
6. (Original post by creativebuzz)
Can you make up an example? I just want to make sure I know exactly what your referring to
Nope. Find your own example, do what I said, if you have trouble post showing both the question and your working.
7. (Original post by DFranklin)
Nope. Find your own example, do what I said, if you have trouble post showing both the question and your working.
Okay, I'll post it the next time I do a differential equation.

What about a checking method for Maclaurin and Taylor series?
8. (Original post by DFranklin)
Nope. Find your own example, do what I said, if you have trouble post showing both the question and your working.
Dfranklin you are savage af
9. (Original post by creativebuzz)
Okay, I'll post it the next time I do a differential equation.

What about a checking method for Maclaurin and Taylor series?
Sub a number in. Be careful though that the number you choose is in the correct interval. Eg if you found the series for Tan(x+pi/4), you would need to sub in a number close to pi/4

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