Global Journal of Researches in Engineering, I: Numerical Methods, Volume 23 Issue 1

Figure 5: Values of the functions- rjad_1_cos (x) and cos (x) The values of these two functions- rjad_1_cos(x) and cos (x) in other coordinate systems coincide only in this section in ± 2π, and for other values of the argument they differ greatly. Figure 6 shows the values of these two functions rjad_2_cos(x) and cos (x). In the given figure shows that the values of these two functions rjad_2_cos(x) and cos (x) in different coordinate systems coincide only in this region of ± 6, and for other values of the argument vary greatly. This suggests that approximation by differential integral functions is possible both at a point and at a certain area. The approximation error is minimal and can be reduced by increasing the number of terms of the polynomial. Figure 6: Values of the functions-rjad_2_cos (x) and cos (x) 10 − 0 10 10 − 10 rjad_1_cos x( ) cos x( ) 2 − 3 x 10 − 0 10 10 − 10 cos x( ) rjad_2_cos x( ) 3 − 1 x Global Journal of Researches in Engineering Volume XxXIII Issue I Version I 16 Year 2023 © 2023 Global Journals ( ) I Application of Differentialintegral Functions