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hat(i) and hat(j) are unit vectors along...

`hat(i)` and `hat(j)` are unit vectors along x-and y-axes respectively. What is the magnitude and the direction of the vectors `hat(i)+hat(j)` and `hat(i)-hat(j)`? What are the components of a vector `vec(A)=2hat(i)+3hat(j)` along the direction `hat(i)+hat(j)`and `hat(i)-hat(j)`?

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