यहाँ ` vec a =hati -2hatj +hatk , hat b =-2hati +4hatj +5hat k `
और ` " "vec c=hati -6hatj -7hat k `
` thereforevec a + vec b +vec c `
` =( vec a + vec b )+ vec c `
` ={(hati -2hatj +hat k ) +(-2hati + 4hat j+ 5hat k) }+(hat i -6hat j-7hatk ) `
`= {(1-2)hati +(-2+4) hatj +(1+ 5)hatk} + (hati -6hat j -7hatk ) `
` =( -hati +2hatj +6hat k )+ (hati -6hat j -7hat k ) `
`= (-1+1 ) hati +(2-6) hatj + (6-7)) hatk `
` =0hati -4hat j -7 hatk `
पुनः ` |veca +vec b +vec c |=|0hati -4hat j-7hatk | `
` " "= sqrt( 0^(2) +(-4) ^(2) +(-7)^(2) ) `
` " "= sqrt( 65) `
