Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -




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Topic review (newest first)

2013-04-18 01:26:09

Wow! I didn't expect it to be so easy, that's embarrassing for me.

Thank you so much!!!! You made my day smile

bob bundy
2013-04-17 17:28:49

hi mel179

Welcome to the forum.

Cube root both sides

note: cube root of 0.8 is approximately 0.9283. 
On a calculator press the y^x button (some calcs show incorrectly as x^y) with (1/3) as the y value. 
ie. 0.8 y^x (1/3)

Hope that's what you need.  smile


2013-04-17 17:20:47

[math]Hi there!

I forgot most of my math from school and uni and now I want to calculate the mesh size of a porous gel.
I came up with this equation:

x^3 = 0.8 (a+x)^3

I measured all values for a using nanoindentation so I need to solve this equation for x.
Could anybody help please?

Thanks a lot

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