Christensen Carrillo
06/13/2024 · Primary School
26. \( \int \frac{\sec ^{2} x d x}{2+4 \operatorname{tg} x}=\frac{1}{4} \ln (2+4 \operatorname{tg} x)+C \) 27. \( \int\left(\frac{\csc x}{1+\operatorname{ctg} x}\right)^{2}=\frac{1}{1+\operatorname{ctg} x}+C \)
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Para la integral 26, se realiza un cambio de variable y se obtiene \( \frac{1}{4} \ln |2 + 4 \tan x| + C \). Para la integral 27, se simplifica y se obtiene \( \frac{1}{1 + \cot x} + C \). Ambas afirmaciones son correctas.
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