is the dot product of(a+b) . (a + b)= a^2 + b^2 + 2ab ?

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- March 10th 2009, 12:11 PMdopidot product verification
is the dot product of

**(a+b) . (a + b)**= a^2 + b^2 + 2ab ? - March 10th 2009, 02:26 PMProve It
- March 10th 2009, 02:48 PMPlato
That is more or less correct!

But it should be written as .

**Please note that the ‘dot products’ in the answer**.

In fact here is an important form:

**No that is not correct!**

To see where you went wrong, recall .

Let and apply the distribution rule twice.