A level math pure 3

Make t the subject of s=s0e^-kt
the 0 should be small and below the s
I know that I'm supposed to use natural logs but I don't know what to do to get t as the subject...
thanks

Reply 1

Muttley79

Original post by zolearns

Make t the subject of s=s0e^-kt
the 0 should be small and below the s
I know that I'm supposed to use natural logs but I don't know what to do to get t as the subject...
thanks

Post your working as per forum guidelines.

Reply 2

zolearns

I can’t because every time it says error uploading image :frown:

Reply 3

Muttley79

Original post by zolearns

I can’t because every time it says error uploading image :frown:

Explain what you did.

You should be able to take a photo and upload it.

Reply 4

DFranklin

Original post by zolearns

I can’t because every time it says error uploading image :frown:

Upload to an image hosting site and post the link then. (TSR tends to be rubbish with image uploads so if you want to be sure your image has the correct orientation and hasn't been shrunk to potato resolution you're often better off using a hosting site).

Reply 5

vc94

Original post by zolearns

Make t the subject of s=s0e^-kt
the 0 should be small and below the s
I know that I'm supposed to use natural logs but I don't know what to do to get t as the subject...
thanks

ln(e^x) = x
So you need to isolate the exponential term in your equation before taking natural logs on both sides.