Question

DacaP(X)=3X,atunci P(1,5)=

Answer 1

$\displaystyle\bf\\2)\\P(X)=3X^4\\P(1,5)=3\cdot(1,\!5)^4=3\cdot\left(\frac{15}{10}\right)^4=3\cdot\left(\frac{3}{2}\right)^4= 3\cdot\frac{3^4}{2^4}=3\cdot\frac{81}{16}=\frac{243}{16}=15\frac{3}{16}\\\\3)\\Gradul~polinomului~~P(X)=X^3(X-2)~~este~4~deoarece\\dupa~desfacerea~parantezei~se~obtine:\\P(X)=X^3(X-2)=X^4-2X^3\\in~care~primul~termen~contine~pe~X~la~puterea~4.$

   

Exercitiul 4 nu este  cuprins intregime in imaginea atasata.