Radius of Convergence Calculator
How to use this calculator:
1. Enter the coefficients of your power series ∑aₙ(x-c)ⁿ separated by commas
2. Optionally specify the variable (default is ‘x’) and center point (default is 0)
3. Click Calculate to find the radius of convergence using the ratio test
Examples: “1, 1/2, 1/4, 1/8”, “1, 1, 1, 1”, “1, -1, 1, -1”