Skip to main content

Table 3 Comparison of \(\widetilde{K}_{90,90}^{\alpha ,\beta ,1,1}(f;x,y)\) and \(\widetilde{K}_{90,90}^{\alpha ,\beta}(f;x,y)\) for different values of α and β

From: Approximation by bivariate Bernstein–Kantorovich–Stancu operators that reproduce exponential functions

\(\alpha _{1}=\alpha _{2}\)

\(\beta _{1}=\beta _{2}\)

\(\|\widetilde{K}_{90,90}^{\alpha ,\beta ,1,1}(f)-f\|\)

\(\|\widetilde{K}_{90,90}^{\alpha ,\beta}(f)-f\|\)

1

5

0.0520

0.1970

5

10

0.0507

0.2709

10

10

0.0507

0.7197

10

100

0.0394

1.6340