[lemma=□] □ □ □
[lemma=","] □ □ □
[lemma=linear] □ □ □
As stated , the linear aerospike nozzle has a " V " shape , with the vertex pointing toward the rear . As an interesting side note , the linear programming problem is NP-hard when restricted to integers , but a suitable approximation can be made using probabilistic methods . Moreover , the linear collider has many advantages over the synchrotrons like the LHC . Essentially , the Linear Programming problem is an optimization problem , and a number of techniques have been developed to solve it . For optimum illumination of the light disk , the linear light source should have a beam angle of less than 70 and a maximum light output .