લક્ષ lim _{x rightarrow infty} x^2 int _{0}^{ | vedclass

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Question

(A) આપણી પાસે છે,$\lim _{x \rightarrow \infty} x^2 \int _{0}^{x} e^{t^3-x^3} dt = \lim _{x \rightarrow \infty} x^2 e^{-x^3} \int _{0}^{x} e^{t^3} dt =

Vedclass · Accepted Answer

$\frac{1}{3}$

Vedclass · Answer

(A) આપણી પાસે છે,$\lim _{x \rightarrow \infty} x^2 \int _{0}^{x} e^{t^3-x^3} dt = \lim _{x \rightarrow \infty} x^2 e^{-x^3} \int _{0}^{x} e^{t^3} dt = \lim _{x \rightarrow \infty} \frac{x^2 \int _{0}^{x} e^{t^3} dt}{e^{x^3}}$.આ $\frac{\infty}{\infty}$ સ્વરૂપ હોવાથી,આપણે $L'Hospital$ ના નિયમનો ઉપયોગ કરીએ:$= \lim _{x \rightarrow \infty} \frac{\frac{d}{dx} (x^2 \int _{0}^{x} e^{t^3} dt)}{\frac{d}{dx} (e^{x^3})} = \lim _{x \rightarrow \infty} \frac{2x \int _{0}^{x} e^{t^3} dt + x^2 e^{x^3}}{3x^2 e^{x^3}} = \lim _{x \rightarrow \infty} \left( \frac{2 \int _{0}^{x} e^{t^3} dt}{3x e^{x^3}} + \frac{1}{3} \right)$.પ્રથમ પદ માટે ફરીથી $L'Hospital$ નો નિયમ વાપરતા:$= \lim _{x \rightarrow \infty} \frac{2 e^{x^3}}{3(e^{x^3} + x \cdot 3x^2 e^{x^3})} + \frac{1}{3} = \lim _{x \rightarrow \infty} \frac{2 e^{x^3}}{3 e^{x^3}(1 + 3x^3)} + \frac{1}{3} = 0 + \frac{1}{3} = \frac{1}{3}$.

લક્ષ $\lim _{x \rightarrow \infty} x^2 \int _{0}^{x} e^{t^3-x^3} dt$ ની કિંમત શોધો.

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