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-x ---- + C 2
Here we have to find the integration of -2x. And 1/2x is before the integration sign.
Now we solve the above question. / 1 | ---- | - 2x dx 2x | / / -2 | = ---- | x dx 2x | / / -1 | = ---- | x dx x | / 2 -1 x = ---- . --- + C x 2 -x = ---- + C 2