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find_root

Function find_root 

Source
pub(crate) fn find_root<F: Fn(f64) -> f64, DF: Fn(f64) -> f64>(
    f: F,
    deriv: DF,
    lower: f64,
    upper: f64,
    val_lower: f64,
    val_upper: f64,
    x_error: f64,
) -> f64