Basic Integration

Please explain what exactly is done in this integration. I tried by dividing and multiplying by r^2 But 1/r is coming. So what's the mistake in that? PFA
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iTeachChem Helper
@Apu
iTeachChem Helper
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Real potato
Real potato7mo ago
@Say_miracle_shadow this is a basic formula of integration
zoe
zoe7mo ago
The differentiation of arctan(x) is 1/(1+x²)
πrate
πrate7mo ago
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πrate
πrate7mo ago
Does this help ?
iTeachChem
iTeachChem7mo ago
noice pi! @Say_miracle_shadow we good?
Say_miracle_shadow
Say_miracle_shadowOP7mo ago
Yesss.. Thanks 😇 + solved @πrate
iTeachChem Helper
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