Well, firstly I have managed to try simplifying the function. And this leads me to 1/3^e^2t+6+1/5^ln(2t). But then I have no idea how to find the first derivative using that....

Reply 7

anonwinner

19

y = (1/3)e^2t + 6 + (1/5)ln2t

So then you just differentiate each term.

dy/dt = (1/3)(2)e^2t + (1/5)(2)(1/2t)

simplifying this gives: dy/dt = (2/3)e^2t + 1/5t

(edited 9 years ago)

Reply 8

zetamcfc

19

Original post by anonwinner

You really need to be told what to differentiate with respect to for this question? It's pretty obvious...

But it is not stated, it is always good to ask and to clarify.

Reply 9

Isabel=)

OP

Original post by anonwinner

You really need to be told what to differentiate with respect to for this question? It's pretty obvious...

It didn't state on the sheet of paper that the teacher gave me :frown:

Reply 10

Isabel=)

OP

Original post by zetamcfc

But it is not stated, it is always good to ask and to clarify.

Yeah.... I will and thanks for everyone's help :redface:

Reply 11

anonwinner

19

Original post by Isabel=)

It didn't state on the sheet of paper that the teacher gave me :frown:

I wasn't saying it to you I was telling the other guy lol

Reply 12

anonwinner

19

Original post by zetamcfc

But it is not stated, it is always good to ask and to clarify.

Many exam questions have questions such as:

Differentiate

i. y = 2x

ii. y = 5x + 6

So you really should be able to know how to differentiate these without asking specifically what to differentiate with respect to

Reply 13

Isabel=)

OP

Original post by anonwinner

I wasn't saying it to you I was telling the other guy lol

Ohh haha... :tongue:

Reply 14

zetamcfc

19

Original post by anonwinner

Many exam questions have questions such as:

Differentiate

i. y = 2x

ii. y = 5x + 6

So you really should be able to know how to differentiate these without asking specifically what to differentiate with respect to

Yes. However why is it wrong to ask to clarify?

As if i gave you z=xy^2 + 2y

And said partially differentiate, I hope your response would be with respect to what.

Reply 15

anonwinner

19

Original post by zetamcfc

Yes. However why is it wrong to ask to clarify?

As if i gave you z=xy^2 + 2y

And said partially differentiate, I hope your response would be with respect to what.

Obviously you would need to in that case

Reply 16

TenOfThem

18

Original post by anonwinner

Many exam questions have questions such as:

Differentiate

i. y = 2x

ii. y = 5x + 6

So you really should be able to know how to differentiate these without asking specifically what to differentiate with respect to