MATH HELP

[holtadit]

How would you find the inverse of  

 f(x) = 10^x

3y+2/y-1 = z   Make Y the subject of the formula

x+a = 2x-5/a  Make X the subject of the formula

PLEASE SHOW ALL WORKINGS !!

[astarmathsandphysics]

How would you find the inverse of   

 f(x) = 10^x

3y+2/y-1 = z   Make Y the subject of the formula

x+a = 2x-5/a  Make X the subject of the formula

PLEASE SHOW ALL WORKINGS !!

y=10^x so x=log₁₀y

Can you confirm the second question

x-2x=a-5/a
-x=a-5/a
x=5/a-1

[holtadit]

f(x) = 10^x

Write down the value of f^?1(1)

Using your methid for the inverse of the above function... I dont get the correct answer (the right answer is 0)

Never mind the second question

Heres another one:
simplify (x^27/27)^1.5

[nid404]

for f(x)=10^x

y=10^x
x=log y to the base 10
log of 1 =0
(but i doubt u are aware of logarithm)
so f'(1) implies f(x)=1

in that case 10^x=1
therefore x=0

[nid404]

Can u check the ms for the simplification so i check if mine's right and then post the steps

[holtadit]

zero is the right answer.

Can u do this ?

simplify (x^27/27)^1.5

[astarmathsandphysics]

I think that 1.5 should be 2/3

if it is then the answer is (x^18)/9

[holtadit]

could u show me the steps, please ?

[nid404]

1.5 is 3/2

[holtadit]

yeah.. nid is right... but astar how did u get the answer... please show me your steps !!!

[nid404]

Astar meant that u may have got the powers wrong...cuz if the right ans is what astar has said....the power should be 2/3 and not 3/2

In that case

check the attachment

[SGVaibhav]

one secret for ari ben canaan
http://www.wolframalpha.com/

if we have to find the inverse of f(x)=10^x

search this over there  "inverse of f(x)=10^x"
its a mathematical computational engine that can help u.
make good use of the secret ari ben canaan.

[Apocalyptical Nemesis]

Oh. I see.

[holtadit]

I dont understand Question 5 paper 4 2003 november

[astarmathsandphysics]

Which in particular or all of it? I muckd my internet up proper and now am on a phone