Discover Questions

As per the photon concept of light ,does a ray of light have an end in space and do different rays have different ends? Choose the table which contains the best values of x for finding the requested limit of the given function. Lim—>2 (x^2+8x-2)? For what values of x is (x-2)(x-3)(x-4)(x-5) < 8? 1+tan²x×(sin²-1)
Can someone help? Is iq 131 high for an engineering student?