Issolvi 3/2x-1-1/x+2

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

Evalwa

$$\frac{x+7}{\left(2x-1\right)\left(x+2\right)}$$

Passi Qosra tas-Soluzzjonijiet

Biex iżżid jew tnaqqas l-espressjonijiet, espandihom biex id-denominaturi tagħhom ikunu l-istess. L-inqas multiplu komuni ta' 2x-1 u x+2 huwa \left(2x-1\right)\left(x+2\right). Immultiplika \frac{3}{2x-1} b'\frac{x+2}{x+2}. Immultiplika \frac{1}{x+2} b'\frac{2x-1}{2x-1}.

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

Billi \frac{3\left(x+2\right)}{\left(2x-1\right)\left(x+2\right)} u \frac{2x-1}{\left(2x-1\right)\left(x+2\right)} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

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

Agħmel il-multiplikazzjonijiet fi 3\left(x+2\right)-\left(2x-1\right).

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

Ikkombina termini simili f'3x+6-2x+1.

$$\frac{x+7}{\left(2x-1\right)\left(x+2\right)}$$

Espandi \left(2x-1\right)\left(x+2\right).

$$\frac{x+7}{2x^{2}+3x-2}$$

Iddifferenzja w.r.t. x

$$-\frac{2x^{2}+28x+23}{4x^{4}+12x^{3}+x^{2}-12x+4}$$

Passi għall-Użu ta' Regola Derivattiva għal Kwozjent

Biex iżżid jew tnaqqas l-espressjonijiet, espandihom biex id-denominaturi tagħhom ikunu l-istess. L-inqas multiplu komuni ta' 2x-1 u x+2 huwa \left(2x-1\right)\left(x+2\right). Immultiplika \frac{3}{2x-1} b'\frac{x+2}{x+2}. Immultiplika \frac{1}{x+2} b'\frac{2x-1}{2x-1}.

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

Billi \frac{3\left(x+2\right)}{\left(2x-1\right)\left(x+2\right)} u \frac{2x-1}{\left(2x-1\right)\left(x+2\right)} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.

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

Agħmel il-multiplikazzjonijiet fi 3\left(x+2\right)-\left(2x-1\right).

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{3x+6-2x+1}{\left(2x-1\right)\left(x+2\right)})$$

Ikkombina termini simili f'3x+6-2x+1.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{x+7}{\left(2x-1\right)\left(x+2\right)})$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' 2x-1 b'kull terminu ta' x+2.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{x+7}{2x^{2}+4x-x-2})$$

Ikkombina 4x u -x biex tikseb 3x.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{x+7}{2x^{2}+3x-2})$$

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.

$$\frac{\left(2x^{2}+3x^{1}-2\right)\frac{\mathrm{d}}{\mathrm{d}x}(x^{1}+7)-\left(x^{1}+7\right)\frac{\mathrm{d}}{\mathrm{d}x}(2x^{2}+3x^{1}-2)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

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}.

$$\frac{\left(2x^{2}+3x^{1}-2\right)x^{1-1}-\left(x^{1}+7\right)\left(2\times 2x^{2-1}+3x^{1-1}\right)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

Issimplifika.

$$\frac{\left(2x^{2}+3x^{1}-2\right)x^{0}-\left(x^{1}+7\right)\left(4x^{1}+3x^{0}\right)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

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

$$\frac{2x^{2}x^{0}+3x^{1}x^{0}-2x^{0}-\left(x^{1}+7\right)\left(4x^{1}+3x^{0}\right)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

Immultiplika x^{1}+7 b'4x^{1}+3x^{0}.

$$\frac{2x^{2}x^{0}+3x^{1}x^{0}-2x^{0}-\left(x^{1}\times 4x^{1}+x^{1}\times 3x^{0}+7\times 4x^{1}+7\times 3x^{0}\right)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

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

$$\frac{2x^{2}+3x^{1}-2x^{0}-\left(4x^{1+1}+3x^{1}+7\times 4x^{1}+7\times 3x^{0}\right)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

Issimplifika.

$$\frac{2x^{2}+3x^{1}-2x^{0}-\left(4x^{2}+3x^{1}+28x^{1}+21x^{0}\right)}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

Ikkombina termini simili.

$$\frac{-2x^{2}-28x^{1}-23x^{0}}{\left(2x^{2}+3x^{1}-2\right)^{2}}$$

Għal kwalunkwe terminu t, t^{1}=t.

$$\frac{-2x^{2}-28x-23x^{0}}{\left(2x^{2}+3x-2\right)^{2}}$$

Għal kwalunkwe terminu t ħlief 0, t^{0}=1.

$$\frac{-2x^{2}-28x-23}{\left(2x^{2}+3x-2\right)^{2}}$$