Kalkulator Integral Tentu dan Tak Wajar
Hitung integral tentu dan tak wajar langkah demi langkah
Kalkulator akan mencoba mengevaluasi integral tentu (yaitu dengan batas-batas), termasuk integral tak wajar, dengan menampilkan langkah-langkahnya.
Solution
Your input: calculate $$$\int_{0}^{2}\left( \sqrt{19} \sqrt{x^{4}} \right)dx=\int_{0}^{2}\left( \sqrt{19} x^{2} \right)dx$$$
First, calculate the corresponding indefinite integral: $$$\int{\sqrt{19} x^{2} d x}=\frac{\sqrt{19} x^{3}}{3}$$$ (for steps, see indefinite integral calculator)
According to the Fundamental Theorem of Calculus, $$$\int_a^b F(x) dx=f(b)-f(a)$$$, so just evaluate the integral at the endpoints, and that's the answer.
$$$\left(\frac{\sqrt{19} x^{3}}{3}\right)|_{\left(x=2\right)}=\frac{8 \sqrt{19}}{3}$$$
$$$\left(\frac{\sqrt{19} x^{3}}{3}\right)|_{\left(x=0\right)}=0$$$
$$$\int_{0}^{2}\left( \sqrt{19} x^{2} \right)dx=\left(\frac{\sqrt{19} x^{3}}{3}\right)|_{\left(x=2\right)}-\left(\frac{\sqrt{19} x^{3}}{3}\right)|_{\left(x=0\right)}=\frac{8 \sqrt{19}}{3}$$$
Answer: $$$\int_{0}^{2}\left( \sqrt{19} \sqrt{x^{4}} \right)dx=\frac{8 \sqrt{19}}{3}\approx 11.6237305161085$$$