Q11 (2 Viewers)

[lonelynight99]

Re: General Thoughts: Mathematics Ext 2

That's what I did first, then I redid the question ....

I got 1/2 ln (u) - ln (u^2 + 1) from 1 to e^2 (did someone get this?)

I got that LOL

 

[Nws m8]

Re: General Thoughts: Mathematics Ext 2

Did you sub in limits?

yeah I did....do we get the same answer?

 

[someth1ng]

Re: General Thoughts: Mathematics Ext 2

I can't remember what my answer was...

 

[Nws m8]

Re: General Thoughts: Mathematics Ext 2

I can't remember what my answer was...

but am i right there? even if u use u=e^x, u use partial fractions m8

 

[SuperSemen]

Re: General Thoughts: Mathematics Ext 2

Could you not have used u = e^2x + 1?

 

[Nws m8]

Re: General Thoughts: Mathematics Ext 2

Could you not have used u = e^2x + 1?

gets complicated , ANYWAYS SOMEONE TELL ME IF IM RIGHT>?!

 

[kenkap]

Re: General Thoughts: Mathematics Ext 2

I forgot to sub in the limits!!! Aaaarrrghhhh!!! Kill me!!!

 

[tomp1612]

Re: General Thoughts: Mathematics Ext 2

I forgot to sub in the limits!!! Aaaarrrghhhh!!! Kill me!!!

**kills**

 

[Nws m8]

Re: General Thoughts: Mathematics Ext 2

Tell me if I am right?! I am so restless right now

 

[someth1ng]

Re: General Thoughts: Mathematics Ext 2

.5 ln | (e^2+1)/2 |

 

[Nws m8]

Re: General Thoughts: Mathematics Ext 2

.5 ln | (e^2+1)/2 |

nahh man

 

[Life4Never]

Re: General Thoughts: Mathematics Ext 2

1/2 integral 2e^2x / e^2x + 1

=1/2 ln (e^2x + 1)

You forgot to include the limits

Tell me if I am right?! I am so restless right now

.5 ln | (e^2+1)/2 |

EDIT: Wait same person lol. I see you fixed it

 

[chriss95]

Re: General Thoughts: Mathematics Ext 2

.5 ln | (e^2+1)/2 |

This is the answer. What you guys talking about?

 

[traiwit]

Re: General Thoughts: Mathematics Ext 2

.5 ln | (e^2+1)/2 |

I got this ! Yayyy

 

[chriss95]

Re: General Thoughts: Mathematics Ext 2

the numerator is the derivative of the denominator... .5 log (e^2x + 1). then sub in limits

 

[theholy1]

(ln(e^2+1)+ln2)/2?

 

[manscux]

question ..... 11

would i loose a mark on 11fii) if my curve was exactly the same shape but linear i.e no curves but horizontal lines ... like a zig zag

 

[iampeterr]

Re: question ..... 11

yes