Issolvi f(x)=3x^3/x^2+x

$$f ( x ) = \frac { 3 x ^ { 3 } } { x ^ { 2 } + x }$$

Evalwa

$$\frac{3x^{2}}{x+1}$$

Passi Qosra tas-Soluzzjonijiet

Iffattura l-espressjonijiet li mhumiex diġà fatturati.

$$\frac{3x^{3}}{x\left(x+1\right)}$$

Annulla x fin-numeratur u d-denominatur.

$$\frac{3x^{2}}{x+1}$$

Iddifferenzja w.r.t. x

$$\frac{3x\left(x+2\right)}{\left(x+1\right)^{2}}$$

Passi għall-Użu ta' Regola Derivattiva għal Kwozjent

Għal kwalunkwe żewġ funzjonijiet differenzjabbli, id-derivattiv tal-kwozjent ta' żewġ funzjonijiet huwa d-denominatur immultiplikat bid-derivattiv tan-numeratur minus in-numeratur immultiplikat bid-derivattiv tad-denominatur, kollha diviżi bid-denominatur kwadrat.

$$\frac{\left(x^{2}+x^{1}\right)\frac{\mathrm{d}}{\mathrm{d}x}(3x^{3})-3x^{3}\frac{\mathrm{d}}{\mathrm{d}x}(x^{2}+x^{1})}{\left(x^{2}+x^{1}\right)^{2}}$$

Id-derivattiva ta’ polynomial hija s-somma tad-derivattivi tat-termini tagħha. Id-derivattiva ta’ terminu kostanti hija 0. Id-derivattiva ta’ ax^{n} hijanax^{n-1}.

$$\frac{\left(x^{2}+x^{1}\right)\times 3\times 3x^{3-1}-3x^{3}\left(2x^{2-1}+x^{1-1}\right)}{\left(x^{2}+x^{1}\right)^{2}}$$

Issimplifika.

$$\frac{\left(x^{2}+x^{1}\right)\times 9x^{2}-3x^{3}\left(2x^{1}+x^{0}\right)}{\left(x^{2}+x^{1}\right)^{2}}$$

Immultiplika x^{2}+x^{1} b'9x^{2}.

$$\frac{x^{2}\times 9x^{2}+x^{1}\times 9x^{2}-3x^{3}\left(2x^{1}+x^{0}\right)}{\left(x^{2}+x^{1}\right)^{2}}$$

Immultiplika 3x^{3} b'2x^{1}+x^{0}.

$$\frac{x^{2}\times 9x^{2}+x^{1}\times 9x^{2}-\left(3x^{3}\times 2x^{1}+3x^{3}x^{0}\right)}{\left(x^{2}+x^{1}\right)^{2}}$$

Biex timmultiplika l-qawwa tal-istess bażi, żid l-esponenti tagħhom.

$$\frac{9x^{2+2}+9x^{1+2}-\left(3\times 2x^{3+1}+3x^{3}\right)}{\left(x^{2}+x^{1}\right)^{2}}$$

Issimplifika.

$$\frac{9x^{4}+9x^{3}-\left(6x^{4}+3x^{3}\right)}{\left(x^{2}+x^{1}\right)^{2}}$$

Ikkombina termini simili.

$$\frac{3x^{4}+6x^{3}}{\left(x^{2}+x^{1}\right)^{2}}$$

Għal kwalunkwe terminu t, t^{1}=t.

$$\frac{3x^{4}+6x^{3}}{\left(x^{2}+x\right)^{2}}$$