Evaluate the following integrals. int x^210^{x^3}dx

Evaluate the following integrals. int x^210^{x^3}dx

Question
Integrals
asked 2021-02-24
Evaluate the following integrals.
\(\int x^210^{x^3}dx\)

Answers (1)

2021-02-25
\(\text{The given integral is,}\)
\(\int x^210^{x^3}dx\)
\(\text{Using substitution method of integration, on substituting }x^3\text{ with t}\)
\(x^3=t\)
\(3x^2dx=dt\)
\(x^2dx=\frac{dt}{3}\)
\(\text{Then the transformed integral we get is,}\)
\(I=\int\frac{10^t}{3}dt\)
\(=\frac{1}{3}\int 10^tdt\)
\(\text{Using exponential rule, }\int a^xdx=\frac{a^x}{\ln(a)}+C\)
\(I=\frac{1}{3}\int10^tdt\)
\(=\frac{1}{3}[\frac{10^t}{\ln(10)}]+C\)
\(\text{On puttinf back the value of t, we get}\)
\(I=\frac{10^{x^3}}{3\ln(10)}+C\)
\(\text{Therefore, the value of the given integral is }\frac{10^{x^3}}{3\ln(10)}+C\)\)
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