Integral de cos(xlogt) dx
Solución
Respuesta (Indefinida)
[src]
/ //sin(x*log(t)) \
| ||------------- for log(t) != 0|
| cos(x*log(t)) dx = C + |< log(t) |
| || |
/ \\ x otherwise /
$$\int \cos{\left(x \log{\left(t \right)} \right)}\, dx = C + \begin{cases} \frac{\sin{\left(x \log{\left(t \right)} \right)}}{\log{\left(t \right)}} & \text{for}\: \log{\left(t \right)} \neq 0 \\x & \text{otherwise} \end{cases}$$
/sin(log(t))
|----------- for Or(And(t >= 0, t < 1), t > 1)
< log(t)
|
\ 1 otherwise
$$\begin{cases} \frac{\sin{\left(\log{\left(t \right)} \right)}}{\log{\left(t \right)}} & \text{for}\: \left(t \geq 0 \wedge t < 1\right) \vee t > 1 \\1 & \text{otherwise} \end{cases}$$
=
/sin(log(t))
|----------- for Or(And(t >= 0, t < 1), t > 1)
< log(t)
|
\ 1 otherwise
$$\begin{cases} \frac{\sin{\left(\log{\left(t \right)} \right)}}{\log{\left(t \right)}} & \text{for}\: \left(t \geq 0 \wedge t < 1\right) \vee t > 1 \\1 & \text{otherwise} \end{cases}$$
Piecewise((sin(log(t))/log(t), (t > 1)∨((t >= 0)∧(t < 1))), (1, True))
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.