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Someone which statements are true? check all that apply.

How many and of which kind of roots does the equation f(x)=x3−x2−x+1

Aci is desired for the true average stray-load loss μ (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. assume that stray-load loss is normally distributed with σ = 2.3. (round your answers to two decimal places.)