\( \int _{0}^{1}\sin (t^{2}) d t=t^{2}-\frac{t^{6}}{3!}+\frac{t^{10}}{5!}-\frac{t^{14}}{7!} \)
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The Deep Dive
The integral \( \int_{0}^{1} \sin(t^{2}) dt \) can be evaluated using the series expansion of \( \sin(x) \). By substituting \( x = t^2 \), we can express \( \sin(t^2) \) as a Taylor series: \( \sin(t^2) = t^2 - \frac{(t^2)^{3}}{3!} + \frac{(t^2)^{5}}{5!} - \frac{(t^2)^{7}}{7!} + \cdots \). When integrated term by term from 0 to 1, this series gives an approach to approximating the value of the integral. As this integral converges to a numerical value, it serves as a practical example of how infinite series can provide solutions to problems that are not trivial to evaluate directly. Integrals like this one have real-world applications in physics, particularly in wave mechanics and signal processing, where functions like \( \sin(t^2) \) might model a wave's behavior.
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