#Solving quadratic equations calculator portable#

The bones are thin rods which are inscribed with multiplication tables but all the calculation was done by mentally. in 1617 when Scottish mathematician John Napier shared a device that came to known as Napier’s bones. Abacus was invented in Sumeria around 2500B.C. The first tool created specifically for calculation is the abacus but the abacus was not very helpful for division and multiplication. It is the most impossible for us to consider mathematics without something as apparently simple as a calculator it is interesting to know that there was no calculator before 1970. Towards the end of the 17 th century gott fried Leibniz built the first calculator capable of doing the four basic operations he invented the, so called Leibniz wheel which has been used for centuries as the working principle of mechanical calculators based on Pascal which was used as a commercial calculator. Blaise Pascal around 1650 designed a mechanical calculator capable of doing sums and subtraction even if it didn’t have big success because it was difficult to use and expensive, it was the start of almost 400 years of research on the subject fifty pieces were built. In the era of digital technology few people know for years known has utilized mechanical calculators which were able to do calculation using complicated calculating gearwheels mechanism the first mechanical calculator of this kind was designed by wilhelm shekhar is 1623 even if did not work its principles were later used with success. As it offer quick and easy techniques of counting. It is known the world’s first calculator, which is still in practice. Though still is use in today’s world, the abacus was merely the beginning of mankind’s interest in calculating machine, which has increased exponentially over the years. It gives assistance not only to blind persons, as it is equally helpful for all, especially in early year of learning mathematical calculation. They are credited for first former calculating machine whereas modern abacus is used to assist students with visual impairments. Jack Kilby and Edith Clarke are the very first persons. In short, the abacus was merely the beginning of calculating machine and our online calculator is the most modern device. As far as online calculator are related these are ideal tool for quick calculation which is far more convenient than normal everyday use calculator.

#Solving quadratic equations calculator portable#

An electronic calculator is a portable electronic device used to perform basic operation (addition, subtraction, multiplication and division) as well as basic arithmetic to complex mathematic. In short the abacus (plural abaci or abacuses) also called a counting frame and revolution from abacus to calculator is involved many steps/periods basically our modern calculator is the up-grade and more modified form, where we can handle large and computed figure very precisely. The Japanese adopted the Chinese abacus and later they modified it by removing one bead from the bottom row. The revolution of calculator from abacus involved many revolutionary changes, as the abacus with wires or poles running through center of the beads were invented in china. The abacus is normally used to help school going children for the basic concept of a counting in this way their motor skill developed. It normally consists on set of beads those can be moved and shaved position of number. From Abacus To CalculatorĪn abacus is a mechanical device designed to make arithmetic calculation faster, it represent the evolution of our hands, as tools used for counting. Discriminant analysis is used to determine which variable discriminant between two or more occurring groups. Quadratic discriminant is a general form of Bayesian discriminant. The shape of the graph of a quadratic equation is a parabola. Quadratic functions are widely used to solve problem involving the roots and intercepts of a quadratic function. By using the quadratic formula and their roots either real or complex, we can easily find out x-intercepts of quadratic functions. Analysisīeyond any doubt quadratic formula is the best option for solving quadratic equation, even knowing there are few other method also by complexity the square method, graphing and factorizing but quadratic formula is the most convenient and quick method besides many other benefits. When it is positive, we get real two solutions, when it is zero we get only one solution and when it is negative we get complex solution.