Datrys x^3+1/x+3

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

Enrhifo

$$\frac{x^{4}+3x^{3}+1}{x+3}$$

Camau Ateb Byr

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch x^{3} â \frac{x+3}{x+3}.

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

Gan fod gan \frac{x^{3}\left(x+3\right)}{x+3} a \frac{1}{x+3} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

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

Gwnewch y gwaith lluosi yn x^{3}\left(x+3\right)+1.

$$\frac{x^{4}+3x^{3}+1}{x+3}$$

Gwahaniaethu w.r.t. x

$$\frac{3x^{4}+18x^{3}+27x^{2}-1}{\left(x+3\right)^{2}}$$

Camau gan Ddefnyddio Rheol Deilliadol ar gyfer Cyniferydd

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch x^{3} â \frac{x+3}{x+3}.

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

Gan fod gan \frac{x^{3}\left(x+3\right)}{x+3} a \frac{1}{x+3} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

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

Gwnewch y gwaith lluosi yn x^{3}\left(x+3\right)+1.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{x^{4}+3x^{3}+1}{x+3})$$

Ar gyfer unrhyw ddau ffwythiant y mae modd eu gwahaniaethu, deilliad cyniferydd dau ffwythiant yw’r enwadur wedi’i luosi â deilliad yr enwadur wedi’i dynnu o’r rhifiadur wedi’i luosi â deilliad yr enwadur, y cwbl wedi’i rannu â’r enwadur wedi'i sgwario.

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

Deilliad polynomaial yw swm deilliadau ei dermau. Deilliad term cyson yw 0. Y deilliad o ax^{n} yw nax^{n-1}.

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

Symleiddio.

$$\frac{\left(x^{1}+3\right)\left(4x^{3}+9x^{2}\right)-\left(x^{4}+3x^{3}+1\right)x^{0}}{\left(x^{1}+3\right)^{2}}$$

Lluoswch x^{1}+3 â 4x^{3}+9x^{2}.

$$\frac{x^{1}\times 4x^{3}+x^{1}\times 9x^{2}+3\times 4x^{3}+3\times 9x^{2}-\left(x^{4}+3x^{3}+1\right)x^{0}}{\left(x^{1}+3\right)^{2}}$$

Lluoswch x^{4}+3x^{3}+1 â x^{0}.

$$\frac{x^{1}\times 4x^{3}+x^{1}\times 9x^{2}+3\times 4x^{3}+3\times 9x^{2}-\left(x^{4}x^{0}+3x^{3}x^{0}+x^{0}\right)}{\left(x^{1}+3\right)^{2}}$$

I luosi pwerau sy’n rhannu’r un sail, ychwanegwch eu hesbonyddion.

$$\frac{4x^{1+3}+9x^{1+2}+3\times 4x^{3}+3\times 9x^{2}-\left(x^{4}+3x^{3}+x^{0}\right)}{\left(x^{1}+3\right)^{2}}$$

Symleiddio.

$$\frac{4x^{4}+9x^{3}+12x^{3}+27x^{2}-\left(x^{4}+3x^{3}+x^{0}\right)}{\left(x^{1}+3\right)^{2}}$$

Cyfuno termau sydd yr un peth.

$$\frac{3x^{4}+6x^{3}+12x^{3}+27x^{2}-x^{0}}{\left(x^{1}+3\right)^{2}}$$

Ar gyfer unrhyw derm t, t^{1}=t.

$$\frac{3x^{4}+6x^{3}+12x^{3}+27x^{2}-x^{0}}{\left(x+3\right)^{2}}$$

Ar gyfer unrhyw derm t ac eithrio 0, t^{0}=1.

$$\frac{3x^{4}+6x^{3}+12x^{3}+27x^{2}-1}{\left(x+3\right)^{2}}$$