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C3 - Logs help Watch

1. Need some help with the following question. I don't know how to do it

mm it is supposed to be e^(7x+2) not sure how you latex that.

Any help would be appreciated
2. My knowledge only extends to C2. I'm trying to understand concepts now. Dif/int are easy but understanding them is problematical. Shouldn't be too hard.
3. (Original post by MathMeister)
My knowledge only extends to C2. I'm trying to understand concepts now. Dif/int are easy but understanding them is problematical. Shouldn't be too hard.
4. (Original post by Super199)
Need some help with the following question. I don't know how to do it

mm it is supposed to be e^(7x+2) not sure how you latex that.

Any help would be appreciated
Does this help:

5. (Original post by rayquaza17)
Does this help:

Nope I honestly don't know what do with that.
Can I just take ln of both side and use log laws?
6. (Original post by Super199)
I just wanted to comment :/ I hope you do well in your exams.
7. (Original post by MathMeister)
I just wanted to comment :/ I hope you do well in your exams.
Haha fair enough. Stop procrastinating and go do some C1
8. (Original post by MathMeister)
Doing c2 at the mo. C1 doesn't test me much. I've basically done it all tbh.
Are you doing S1 or M1 next year?
9. I'm doing C1,C2,S1- FP1, M1 and M2. (I think) Or instead it will be S2 rather than M2.
10. (Original post by Super199)
Any help would be appreciated
Okay so

I would natural log both sides, so you have:

Use your rules of logarithms to get this:

I'm sure you can do the rest bearing in mind the logarithm rule of and rearranging.
11. (Original post by Super199)
Need some help with the following question. I don't know how to do it

mm it is supposed to be e^(7x+2) not sure how you latex that.

Any help would be appreciated

as lne = 1 and ln(e^(7x+2)) = (7x+2)lne

that's what I'd do anyway
12. (Original post by CTArsenal)
Okay so

I would natural log both sides, so you have:

Use your rules of logarithms to get this:

I'm sure you can do the rest bearing in mind the logarithm rule of and rearranging.
Ahh got it. Didn't spot the 2nd step . Thanks
13. (Original post by shutupem)

as lne = 1 and ln(e^(7x+2)) = (7x+2)lne

that's what I'd do anyway
Yh that's what I got with a bit of guidance . Cheers
14. (Original post by Super199)
Need some help with the following question. I don't know how to do it

mm it is supposed to be e^(7x+2) not sure how you latex that.

Any help would be appreciated
e(7x + 2)

e[sup](7x + 2)[/sup

just type in the above & put the missing square bracket...
15. (Original post by shutupem)

as lne = 1 and ln(e^(7x+2)) = (7x+2)lne

that's what I'd do anyway
Full solutions should be a last resort.
16. (Original post by Super199)
Need some help with the following question. I don't know how to do it

mm it is supposed to be e^(7x+2) not sure how you latex that.

Any help would be appreciated
sorry if this is terribly silly of me but are you solving for x?
usually in that case i take ln on both sides and use the properties! but im not getting e^(7x+2)...
sorry if this is terribly silly of me but are you solving for x?
usually in that case i take ln on both sides and use the properties! but im not getting e^(7x+2)...
I'm not sure what your question is? If you are referring to the e^(7x+2) bit underneath the question, I was saying that I couldn't type it in properly. The answer isn't that
18. (Original post by Super199)
I'm not sure what your question is? If you are referring to the e^(7x+2) bit underneath the question, I was saying that I couldn't type it in properly. The answer isn't that
lolol nvm got it xD sorry!
19. (Original post by Super199)
Need some help with the following question. I don't know how to do it

mm it is supposed to be e^(7x+2) not sure how you latex that.

Any help would be appreciated
are you doing work for your next year?
20. (Original post by Ilovemaths96)
are you doing work for your next year?
Yup. I have 10 weeks off, got 6 left but I have been fooling around for half of the time. Wbu?

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