Need help on qstn (2 Viewers)

[Speed6]

Can someone please show me the steps in working out for this questions please?

 

[integral95]

For simplicity you can let u = x+4 (you don't have to)

 

[Speed6]

For simplicity you can let u = x+4 (you don't have to)

I let u=x+4 and after some working out I nearly got the same answers as you but at the end it was still wrong...

Thanks for the quick, prompt reply, it's satisfying to see that there are mathematicians scrolling through BOS at irrespective times.

 

[Speed6]

Would you have any other approaches to this question?

 

[integral95]

I let u=x+4 and after some working out I nearly got the same answers as you but at the end it was still wrong...

Thanks for the quick, prompt reply, it's satisfying to see that there are mathematicians scrolling through BOS at irrespective times.

Let's just say I had nothing better to do hahaah.

how did you get it wrong?

 

[integral95]

Would you have any other approaches to this question?

Nope that's how I'd do it in the exam. (well no way I would expand that lol)

 

[Speed6]

Nope that's how I'd do it in the exam. (well no way I would expand that lol)

lol

Let's just say I had nothing better to do hahaah.

how did you get it wrong?

I did let u= (x+4)^2...

 

[Speed6]

Ok I fixed if up integral energy:

 

[Speed6]

How would I solve this question?

 

[Squar3root]

let u = 3^x and it is essentially the same problem as above

 

[Squar3root]

3^(3x) = (3^x)^3

 

[Speed6]

Thanks squareroot

 

[Speed6]

Wait, I dont get it, can you please explain that?

 

[FrankXie]