1.

Let →a=4→i+3→j and →b=3i+4j. (a) Find the magitudes of (a) →a, (b) →b, (c) →a+→b and (d) →a−→b.

Answer»

Let a=4i+3j and b=3i+4j. (a) Find the magitudes of (a) a, (b) b, (c) a+b and (d) ab.



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