Using the scientific Calculator is never enough. At some point, you will be required to use a graphical calculator. It helps you solve problems in a better and easier manner, and in some instances it is mandatory. Just like the normal one, there are quite a number of these Calculators. Actually, it appears that more versions are making their way into the market. This obviously offers a student more buying options. But, which is the best of them all? Is it the Texas Instruments brand, Casio, Khanka or what? You probably are having a tough time answering this question and…