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MArc

Questions (2)

Knowing that Pi/2 < x < Piand that 0<y< Pi/2 that sinx = 1/5 and that cos y = 1/8, find sin (x+y), sin (x-y), cos (x+y) and cos
1. 1 answer
2. 391 views
Find two non-intersecting intervals where f(x) +12x^4 + 50x^3 + 80x^2-100 has at least one root. Justify your answer.
1. 1 answer
2. 429 views