Question

If P=2^i+4^j+14^k,Q=4^i+4^j+10^k.Find the magnitude of P+Q

Answer 1

Now we have to add 2i to 4i, 4j to 4j and 14k to 10k. If we add all of those we get 6i+8j+24k. To find magnitude we have to square each number and put them under root. So we get (36+64+576)^1/2. Now if we add them we get root of 676, that is 26. So, the magnitude of P+Q is 26.