X^2 y^2 z^2=1 graph 246151-X2 y2 z 2 1 grafica
Y ≈ f(a) f′ (a)(x − a) The diagram for the linear approximation of a function of one variable appears in the following graph Figure 430 Linear approximation of a function in one variable The tangent line can be used as an approximation to the function f(x) for