Tentukan hasil dari Pertanyaan nomer pertama. Terimakasih.

[tex]\int\limits^4_{-1} {2x+1} \, dx = ( \frac{2}{2} )x^{0+2} + (\frac{1}{1}) x^{0+1} = x^{2} +x \\ \\ \int\limits^4_{-1} {2x+1} \, dx = (( 4^{2})-( -1^{2}))+(4 - (-1)) \\ \\ \int\limits^4_{-1} {2x+1} \, dx = (16-1)+(4+1) \\ \\ \int\limits^4_{-1} {2x+1} \, dx = 15 + 5 \\ \\ \int\limits^4_{-1} {2x+1} \, dx = 20 [/tex]