PEMBUATAN KALKULATOR INTEGRASI NUMERIK DENGAN METODE TRAPESIUM, 1/3 SIMPSON, 3/8 SIMPSON , ROMBERG DAN MONTE CARLO PADA KASUS INTEGRAL TUNGGAL DAN INTEGRAL GANDA

Integral has many benefits on daily life such as on area and volume calculation. However, some integral need to solve using numerical method because they will difficult to solve using analytical calculation. This paper proposed to make numerical integration calculator. This paper also compare to calculate a single and double integral between Trapezoid, 1/3 Simpson, 3/8 Simpson, Romberg and Monte Carlo. The result of these methods calculator can be used to solve integrals case. The validation testing shows the result of integrals calculation on numerical integration calculator already appropiate with the result of numerical calculation. The analysis result shows that Romberg methods has the best accurate level with smallest error on single integral calculation. The analysis of double integral show that Romberg method has a smallest error. Keywords : Numerical Integration, Trapezoid, Simpson, Romberg, Monte Carlo