The formula to calculate the Ninth Root (R9) is:
\[ \text{R9} = y^{\frac{1}{9}} \]
Where:
Let's say the number (y) is 512. Using the formula:
\[ \text{R9} = 512^{\frac{1}{9}} \approx 2 \]
So, the ninth root of 512 is approximately 2.