University of Guilan Journal of Mathematical Modeling 2345-394X 11 4 2023 12 01 New algorithms to estimate the real roots of differentiable functions and polynomials on a closed finite interval 631 647 6948 10.22124/jmm.2023.22967.2040 EN Hassan Khandani Department of mathematics, Mahabad Branch, Islamic Azad university, Mahabad, Iran Journal Article 2022 09 30  We propose an algorithm that estimates the real roots of differentiable functions on closed intervals. Then, we extend this algorithm to real differentiable functions that are dominated by a polynomial. For each starting point, our method converges to the nearest root to the right or left hand side of that point. Our algorithm can look for missed roots as well and theoretically it misses no root. Furthermore, we do not find the roots by randomly chosen initial guesses. The iterated sequences in our algorithms converge linearly. Therefore, the rate of convergence can be accelerated considerably to make it comparable to Newton-Raphson and other high-speed methods. We have illustrated our algorithms with some concrete examples. Finally, the pseudo-codes of the related algorithms are presented at the end of this manuscript. https://jmm.guilan.ac.ir/article_6948_e60c20ab368d32c95b012e4deb49e32e.pdf