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măcar 2 3 integrale va rog

Măcar 2 3 Integrale Va Rog class=

Răspuns :

b)[tex] \int\limits { \frac{arctgx}{1+ x^{2} } } \, dx = \int\limits{arctgxd(arctgx)} = \frac{arctg^2x}{2}+C [/tex]
d)[tex] \int\limits{sin2xcosx} \, dx= \frac{1}{2} \int\limits {sin2x} \, d(sin2x)= \frac{sin^22x}{2}+C [/tex]