Amagnetic system has specific heat which is a function of applied magnetic field, h and temperature, t. it can be represented theoretically by: c(t, h) = c(h|t)= n . (h|t)²/cosh²(h|t)where n is constant. a. expand c(t, h) in power of (h/t) up to (h/t)⁴ assuming h< < t. b. sketch (freehand) the behavior of your answer as a function of x = h/t.