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# FP1 Calculus URGENT HELP please! Watch

1. Q3 is from FP1 Calculus...have no idea how to do it since I got two 'problem values' here

2. I've only just finished learning FP1, and this is how I would go about it Replace the infinity with 'a', then integrate as normal. As 'a' tends towards infinity, the integral also tends towards infinity! As I said I'm also just a student so let me know if anyone disagrees
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3. (Original post by Oliviazh)

Q3 is from FP1 Calculus...have no idea how to do it since I got two 'problem values' here

Integrate as normal. When it comes to substituting limits, you cannot substitute because it is not a number. Instead, you assign a different variable, such as , and take the limit of the integral as
4. (Original post by RDKGames)
Integrate as normal. When it comes to substituting limits, you cannot substitute because it is not a number. Instead, you assign a different variable, such as , and take the limit of the integral as
But how about 0? Cuz my teacher also said that we need to replace 0 with a different variable.... that's why I'm confused cuz it then will be two variables😂
Or is it in this case we don't need to consider 0?
5. (Original post by Oliviazh)
But how about 0? Cuz my teacher also said that we need to replace 0 with a different variable.... that's why I'm confused cuz it then will be two variables😂
Or is it in this case we don't need to consider 0?
Well technically speaking the function is undefined at x=0 so you would need to replace it as well, but personally I would skip this because the integrated function will be defined at x=0.

If it was or something then you would indeed need to replace the 0.
6. (Original post by RDKGames)
Well technically speaking the function is undefined at x=0 so you would need to replace it as well, but personally I would skip this because the integrated function will be defined at x=0.

If it was or something then you would indeed need to replace the 0.
Thanks a lot!
7. (Original post by spoiler-s)
I've only just finished learning FP1, and this is how I would go about it Replace the infinity with 'a', then integrate as normal. As 'a' tends towards infinity, the integral also tends towards infinity! As I said I'm also just a student so let me know if anyone disagrees
Thank you!

Updated: October 13, 2016
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