Gjeni vlerën numerike të integraleve të mëposhtme. Argumentoni përgjigjet.
∫ 1 7 \int^{7}_{1} ∫ 1 7 2x x x x 2 + 15 \sqrt{x^2 +15} x 2 + 1 5 dx x x ∫ 1 4 \int^{4}_{1} ∫ 1 4 ( x − 1 ) 2 2 x \frac{(\sqrt{x}-1)^2}{2 \sqrt{x}} 2 x ( x − 1 ) 2 dx x x ∫ 0 1 \int^{1}_{0} ∫ 0 1 (x x x - 1)(x x x 2 - 2x x x - 1)3 dx x x ∫ 1 2 \int^{2}_{1} ∫ 1 2 2 x + 3 x 2 + 3 x \frac{2x+3}{x^2+3x} x 2 + 3 x 2 x + 3 dx x x ∫ 0 π 6 \int^{\frac{\pi}{6}}_{0} ∫ 0 6 π s i n x c o s x \frac{sin \space x}{\sqrt{cos \space x}} c o s x s i n x dx x x ∫ 5 11 \int^{11}_{5} ∫ 5 1 1 x x 2 − 21 \frac{x}{\sqrt{x^2-21}} x 2 − 2 1 x dx x x ∫ 0 π 6 \int^{\frac{\pi}{6}}_{0} ∫ 0 6 π s i n x c o s 2 x \frac{sin \space x}{cos^2x} c o s 2 x s i n x dx x x ∫ l n 3 l n 8 \int^{ln8}_{ln3} ∫ l n 3 l n 8 ex ^x x e x + 1 \sqrt{e^x + 1} e x + 1 dx x x