Question

$\int\limits^4_1 \frac{1-3x}{ \sqrt{x} } dx$,    \int\limits^4_0 \frac{dx}{2x+1} dx [/tex]

Answer 1

separa in 2 integrale 
1/radical din x minus 3x/radical din x
vei primi 2radical x minus 2xradicalx in limitele 1 la 4.
aplici formula L-N primesti -12