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Beyond Horizon Set 2 Paper 2 · Q15

Paper 2Functions & graphs

If l2+m2+n2=1l^2+m^2+n^2=1 and p2+q2+r2=1p^2+q^2+r^2=1, then the range of values lp+mq+nrlp+mq+nr can take is

A[2,∞)[2,\infty)
B[2,1][2,1]
C(∞,1](\infty,1]
D[−1,1][-1,1]
E[1,∞)[1,\infty)
Fdoes not satisfy any of the above conditions

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