limx→2(x4−3x3+x2+7x−11)\lim_{x\to2}\left(x^4-3x^3+x^2+7x-11\right)x→2lim(x4−3x3+x2+7x−11)
2−4cos2 − 2 senx 2-4cos2\:-\:2\:senx\:2−4cos2−2senx
(2x−5)(x−1)\left(2x-5\right)\left(x-1\right)(2x−5)(x−1)
(−2+5−7)⋅(3−5+8)\left(-2+5-7\right)\cdot\left(3-5+8\right)(−2+5−7)⋅(3−5+8)
ddxarccot3x2\frac{d}{dx}arccot\frac{3x}{2}dxdarccot23x
dydx=2x−3y+1, y(1)=5\frac{dy}{dx}=2x-3y+1,\:y\left(1\right)=5dxdy=2x−3y+1,y(1)=5
2a − 5b + 3c; a = 7, b = −5, c = 42a\:-\:5b\:+\:3c;\:\:a\:=\:7,\:b\:=\:-5,\:c\:=\:42a−5b+3c;a=7,b=−5,c=4
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