Tasɣent (tusnakt)

aɣawas amseffar $\begin{array}{cc}& f:[-1,1.5]\to [-1,1.5]\\ & x\mapsto \frac{(4x^3-6x^2+1)\sqrt{x+1}}{3-x}\end{array}$

Tagensest tudmawant i tesɣent

Azamul n tesɣent

Deg tusnakt, Tasɣent d tafekka tasnakant i d-isgensisen assaɣ imisin i teqqnen yal aferdis seg tagruma yettwassmman tagruma n tbadut neɣ tagrawt n tbadut neɣ taɣult $X$ s yiwen n uferdis deg tegrawt yettusemman tazdaɣult neɣ taɣult tamudemt. Neɣ s usemres n taftart tasnakant tamaddudt: $f:X\to Y,x\mapsto f(x)$

Seg usenmel-a, ttwafarasen-tt-d waṭas n tɣawsiwin tigejdanin:

• I yal amsedfar tagrawt tabadut tettwasemma $X$.
• I yal amsedfar n tegrawt n tezdaɣult tettwasemma $Y$.
• Ulamek ɣef uferdis seg tegrawt n tagruma $X$ ad tettwaqqen anagar s uferdis amyiwen seg tegrawt n tezdaɣult $Y$.
• Aferdis seg tegrawt n tezdaɣult $Y$ yezmer ad yettwiqqen s yiwen n uferdis neɣ ugar seg tegrawt n tegruma $X$.

Ma tella tegruma d tagrawt n wazalen i yezmer umeskil imziregad yawi $x$, ihi tazdaɣult d tagrawt n wazalen unẓiren i wazalen n tesɣent $f(x)$.