Datrys f(x)=x+1/x^2+1

$$f ( x ) = x + \frac { 1 } { x ^ { 2 } + 1 }$$

Enrhifo

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

Camau Ateb Byr

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch x â \frac{x^{2}+1}{x^{2}+1}.

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

Gan fod gan \frac{x\left(x^{2}+1\right)}{x^{2}+1} a \frac{1}{x^{2}+1} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

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

Gwnewch y gwaith lluosi yn x\left(x^{2}+1\right)+1.

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

Gwahaniaethu w.r.t. x

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

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 â \frac{x^{2}+1}{x^{2}+1}.

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

Gan fod gan \frac{x\left(x^{2}+1\right)}{x^{2}+1} a \frac{1}{x^{2}+1} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

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

Gwnewch y gwaith lluosi yn x\left(x^{2}+1\right)+1.

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

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.

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

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

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

Symleiddio.

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

Lluoswch x^{2}+1 â 3x^{2}+x^{0}.

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

Lluoswch x^{3}+x^{1}+1 â 2x^{1}.

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

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

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

Symleiddio.

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

Cyfuno termau sydd yr un peth.

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

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

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

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

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