Preimage under a Polynomial
This calculator computes the Preimage under a Polynomial function. In others words, for a given value y_{0} and a Polynomial P(x), it calculates x_{0} such that P(x_{0}) = y_{0}.
How to use this calculator?
Variable  Input a singleletter that is the polynomial variable. Examples : polynomial = 4x+1 , then input variable = 'x' polynomial = 9t + 5 , then input variable ='t' 

Polynomial  Are accepted :

Examples  Polynomial = x^24x+1 (variable = 'x') Polynomial = (x^21)(x5)3 (variable = 'x') Polynomial = x^34/3*x^2+1 (variable = 'x') Polynomial = 0.23*t^21/5*t+1/2 (variable = 't') 
x =  Input a number (integer or fraction or decimal) for which you want to calculate the image under the Polynomial. Example : Enter x = 1/2 and the calculator will compute P(1/2), P being the polynomial you entered. 

See also
Polynomial calculators
Math Calculators