Q50 of 177 Page 24

If and –3 ≤ λ ≤ 2, then write the range of

Given that and -3≤λ≤2

We have to figure out range of


In calculating the modulus of a vector multiplied by a scalar quantity, the sign of the scalar quantity does not matter, only it’s absolute value does.


Hence the minimum value of when λ=0 and maximum value of when λ=-3.


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