Is this proof correct, as I feel unsure about whether or not I did that correct because the book did it differently, I wouldn't know however why my proof should be wrong.
Could you help me out?
The following statement is to be proven by induction. n∑i=1=n2+n2 Base case n=1 1=1+12✓ Induction Step n→n+1 n+1∑i=1=n∑i=1+(n+1)⟺n2+n2+(n+1)⟺n2+n2+2(n+1)2⟺n2+n+2n+22⟺n2+3n+22⟺(n+1)2+(n+1)2
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