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LOG p (64) =3 .. what is p?

i started revising because my maths final year exam is in 2 weeks... anyways i know the answer is 4 but how do you find out p?? i tried square rooting... but it didnt work... i just kept trying with numbers... help :confused:

Reply 1

neomilan

17

I HEART KFC!!!

i started revising because my maths final year exam is in 2 weeks... anyways i know the answer is 4 but how do you find out p?? i tried square rooting... but it didnt work... i just kept trying with numbers... help :confused:

you just use your log rules and know that

p^3

should equal 64 therefore you cube root 64 to find p

Reply 2

fizzicsfiend

I HEART KFC!!!

i started revising because my maths final year exam is in 2 weeks... anyways i know the answer is 4 but how do you find out p?? i tried square rooting... but it didnt work... i just kept trying with numbers... help :confused:

cube root 64

Reply 3

imhiya

15

Log p (64 ) = 3 = log p^3 = 64 p = 64^1/3

Reply 4

I HEART KFC!!!

OP

10

neomilan

you just use your log rules and know that

p^3

should equal 64 therefore you cube root 64 to find p

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

Reply 5

sarubobo28

8

x=LOGa(y) means a^x=y
so
3=LOGp(64) means p^3=64

p= cube root 64=4

Reply 6

I HEART KFC!!!

OP

10

sarubobo28

x=LOGa(y) means a^x=y
so
3=LOGp(64) means p^3=64

p= cube root 64=4

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

Reply 7

clad in armour

16

I HEART KFC!!!

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

you could just do "to the power of 1/5"

Reply 8

fizzicsfiend

I HEART KFC!!!

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

Change the base.

Reply 9

neomilan

17

I HEART KFC!!!

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

then you put

p^5 = 64

p = 64^{\frac{1}{5}}

your calculator has the ^ button, and if you press shift ^ then you get an xth root up, use that, or just use to the power of one fifth....

Reply 10

sarubobo28

8

I HEART KFC!!!

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

Shift ^?

Reply 11

Dumb Economist

13

I HEART KFC!!!

what if it was log p (64) = 5 i dont have a 5th square root on my calculator... btw my calculator is a fx-9750G PLUS its a graphic one... can you look in google images and tell me what to press to put more square roots?

I suggest you in giving up Maths as well as the calculator. You could hire somebody to do that when you grow up. :p:

LOG p (64) =3 .. what is p?

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