x dx 1 2x dx 1 d(x²+2,5) 1
∫ ----------- = ---- * ∫ ----------- = ------ * ∫ --------------- = ------ * ln | x²+2,5 | |₀²=1/2(ln6,5-ln2,5)=
x²+2,5 2 x²+2,5 2 x²+2,5 2
6,5
=1/2 * ln-------- =1/2 *ln2,6
2,5
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x dx 1 2x dx 1 d(x²+2,5) 1
∫ ----------- = ---- * ∫ ----------- = ------ * ∫ --------------- = ------ * ln | x²+2,5 | |₀²=1/2(ln6,5-ln2,5)=
x²+2,5 2 x²+2,5 2 x²+2,5 2
6,5
=1/2 * ln-------- =1/2 *ln2,6
2,5