Please help (!!)

Steven G

Steven G

Elite Member
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Dec 30, 2014
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I was asked to help an old college buddy with the following problem.
If x= 212*36 and y = 28*38, then find z s/t zz=xx*yy
I tried what I could think of but nothing helped.
Please give me the secret to solving such problems.
 
I haven't worked it out, but my first thought was to suppose that z = 2u3v, and write out a couple equations equating powers of 2 and 3 in zz = xx*yy. Does that go anywhere useful?

If not, please show one of your attempts, and/or describe the strategies you tried, at the level I just did.
 
Jomo said:
I was asked to help an old college buddy with the following problem.
If x= 212*36 and y = 28*38, then find z s/t zz=xx*yy
I tried what I could think of but nothing helped.
Please give me the secret to solving such problems.
Click to expand...
What does that mean?
 
Jomo said:
I was asked to help an old college buddy with the following problem.
If x= 212*36 and y = 28*38, then find z s/t zz=xx*yy
I tried what I could think of but nothing helped.
Please give me the secret to solving such problems.
Click to expand...
I would use ln and continue.... and get z = 211 * 37

Now you show your work ........
 
Yes, Dr Peterson you were right. I don't know why I could not get to the answer before but it is z=(2^11)*(3^7).
Thanks!
 
Jomo said:
Yes, Dr Peterson you were right. I don't know why I could not get to the answer before but it is z=(2^11)*(3^7).
Thanks!
Click to expand...
Because it is too dark in the corner??
 
Jomo said:
It means such that. Is than not common notation? I have been using it for decades.
Click to expand...
"than" compared to what?

Those decades are affecting your ocular strength and finger dexterity. That combination of ailments is dangerous to say the least - specially when the patient so particular about "presentation".......
 
Subhotosh Khan said:
"than" compared to what?

Those decades are affecting your ocular strength and finger dexterity. That combination of ailments is dangerous to say the least - specially when the patient so particular about "presentation".......
Click to expand...
that! I meant to write that! I can't wait for your next typo or mistake--oh, that nothing new.

Can you please show or give me a hint about your ln method?
 
Jomo said:
that! I meant to write that! I can't wait for your next typo or mistake--oh, that nothing new. Can you please show or give me a hint about your ln method?
Click to expand...
ln(xx * yy) = x * ln(x) + y * ln(y) = 212 * 36 * [12 * ln(2) + 6 * ln(3)] + 68 * [8 * ln(2) + 8 * ln(3)]

continue....

You say:

"...oh, that nothing new." - where did the verb go?
 
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