Trig and Log in differeniation (2 Viewers)

[powlmao]

Things like ( 1 + sinx )^5 and x^2logex confuse me on how to start.

I can differeniate everything besides ones involving trig and log. You do it the same way right? I just see these and think "Trig, log grr"

Any advice?

 

[MrBrightside]

Things like ( 1 + sinx )^5 and x^2logex confuse me on how to start.

I can differeniate everything besides ones involving trig and log. You do it the same way right? I just see these and think "Trig, log grr"

Any advice?

For x^2logex , that requires the product rule, due to the function having 2 Xs. u = x^2 , u' = 2x , v = lnx , v' = 1 / x

I'm assuming you know that Loge(x) is the same as writing ln(x)

take it from there. y' = vu' - uv'


For ( 1 + sin(x) )^5

you do 5cos(x)*( 1-sin(x) )^4

Chain rule.

 

[SpiralFlex]

For x^2logex , that requires the product rule, due to the function having 2 Xs. u = x^2 , u' = 2x , v = lnx , v' = 1 / x

I'm assuming you know that Loge(x) is the same as writing ln(x)

take it from there. y' = vu' - uv'


For ( 1 + sin(x) )^5

you do 5cos(x)*( 1-sin(x) )^4

using the function of a function rule. treat it as f'(x)*( 1+sin(x) )^f(x)

A few errors there Mr Brightside.

i.

The chain rule,






ii.

Using the product rule,

 

[MrBrightside]

A few errors there Mr Brightside.

i.

The chain rule,






ii.

Using the product rule,

How do you work out the third last line onwards?

 

[tambam]

How do you work out the third last line onwards?

the equation maker thing is cool!
But i dno if i used it correctly...

Okay, it didn't work.
Can someone teach me how to use the equation making thing

 

[AAEldar]

the equation maker thing is cool!
But i dno if i used it correctly...

Okay, it didn't work.
Can someone teach me how to use the equation making thing

Quote my post and have a look at what I've typed in to fix it up. You have to have the [.tex] tags around what you want, without the full stop of course.

 

[tambam]

Quote my post and have a look at what I've typed in to fix it up. You have to have the [.tex] tags around what you want, without the full stop of course.

Um, i don't know how to quote the quote part of your message, so i can't see it =/

 

[SpiralFlex]

Um, i don't know how to quote the quote part of your message, so i can't see it =/

Using Latex:

Step 1. Click on the fx button when you are replying.

Step 2. Enter your equation.

Step 3. Copy and paste here.

Step 4. Add ["tex"] to the front of your equation and add ["/tex"] at the back of your equation. (No quotes.)

Quotes:

Step 1. Click on reply with quote.

 

[tambam]

Quotes:
Step 1. Click on reply with quote.

Haha, i meant when i press 'reply with quote' it only shows what he replied with, and not the quote of my original post which he fixed up.
But thanks

 

[SpiralFlex]

Haha, i meant when i press 'reply with quote' it only shows what he replied with, and not the quote of my original post which he fixed up.
But thanks

Okay human. If at any stage you want to sell your rabbit to me, I will kindly accept. Note: I prefer my bunnies with tomato sauce.

 

[funnytomato]

Okay human. If at any stage you want to sell your rabbit to me, I will kindly accept. Note: I prefer my bunnies with tomato sauce.

sup

 

[AAEldar]

Um, i don't know how to quote the quote part of your message, so i can't see it =/

Right, forgot about that haha.



There you go. Now quote and have a look.

 

[SpiralFlex]

sup

Hello.