Konstans f¨uggv´eny f(x) =c,c∈R f(x) = 3
• Df = (−∞,∞), Rf ={c}
• f minden¨utt folytonos
• lim
x→−∞f(x) =c
• lim
x→∞f(x) =c
• f0(x) = 0
• Df0 = (−∞,∞), Rf0 ={0}
• Z
c dx=cx+C
• Df = (−∞,∞), Rf ={3}
• f minden¨utt folytonos
• lim
x→−∞f(x) = 3,
• lim
x→∞f(x) = 3
• f0(x) = 0
• Df0 = (−∞,∞), Rf0 ={0}
• Z
3dx= 3x+C
Line´aris f¨uggv´eny f(x) =ax+b,a >0,b∈R f(x) = 2x+ 1
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−∞
• lim
x→∞f(x) =∞
• f0(x) =a
• Df0 = (−∞,∞), Rf0 ={a}
• Z
(ax+b)dx=ax2
2 +bx+C
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−∞
• lim
x→∞f(x) =∞
• f0(x) = 2
• Df0 = (−∞,∞), Rf0 ={2}
• Z
(2x+ 1)dx=x2+x+C
Line´aris f¨uggv´eny f(x) =ax+b,a <0,b∈R f(x) =−2x−1
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞
• lim
x→∞f(x) =−∞
• f0(x) =a
• Df0 = (−∞,∞), Rf0 ={a}
• Z
(ax+b)dx=ax2
2 +bx+C
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞
• lim
x→∞f(x) =−∞
• f0(x) =−2
• Df0 = (−∞,∞), Rf0 ={−2}
• Z
(−2x−1)dx=−x2−x+C
Hatv´anyf¨uggv´eny f(x) =xn,np´aros pozit´ıv eg´esz f(x) =x2
• Df = (−∞,∞), Rf = [0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞
• lim
x→∞f(x) =∞
• f0(x) =nxn−1
• Df0 = (−∞,∞), Rf0 = (−∞,∞)
• Z
xndx= xn+1 n+ 1+C
• Df = (−∞,∞), Rf = [0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞
• lim
x→∞f(x) =∞
• f0(x) = 2x,
• Df0 = (−∞,∞), Rf0 = (−∞,∞)
• Z
x2dx= x3 3 +C
Hatv´anyf¨uggv´eny f(x) =xn,np´aratlan pozit´ıv eg´esz f(x) =x3
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−∞
• lim
x→∞f(x) =∞,
• f0(x) =nxn−1
• Df0 = (−∞,∞), Rf0 = [0,∞)
• Z
xndx= xn+1 n+ 1+C
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x−→−∞f(x) =−∞
• lim
x−→∞f(x) =∞
• f0(x) = 3x2
• Df0 = (−∞,∞), Rf0 = [0,∞)
• Z
x3dx= x4 4 +C
A hatv´anyf¨uggv´enyek ¨osszehasonl´ıt´asa
Gy¨okf¨uggv´eny f(x) = √n
x=x1n,np´aros pozit´ıv eg´esz f(x) =√ x
• Df = [0,∞), Rf = [0,∞)
• f a 0-ban balr´ol folytonos, min- den¨utt m´ashol folytonos
• lim
x→0+f(x) = 0
• lim
x→∞f(x) =∞
• f0(x) = n1·xn1−1= 1
n·n√ xn−1
• Df0 = (0,∞), Rf0 = (0,∞)
• Z
√n
x dx= Z
x1ndx= xn1+1
1
n + 1+C
• Df = [0,∞), Rf = [0,∞)
• f a 0-ban balr´ol folytonos, min- den¨utt m´ashol folytonos
• lim
x→0+f(x) = 0
• lim
x→∞f(x) =∞
• f0(x) = 2√1x
• Df0 = (0,∞), Rf0 = (0,∞)
• Z √
x dx=2 3x32 +C
Gy¨okf¨uggv´eny f(x) = √n
x=xn1,np´aratlan pozit´ıv eg´esz f(x) =√3 x
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−∞
• lim
x→∞f(x) =∞
• f0(x) = n1·xn1−1= 1
n·n√ xn−1
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (0,∞)
• Z
√n
x dx= Z
x1ndx= xn1+1
1
n + 1+C
• Df = (−∞,∞), Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−∞
• lim
x→∞f(x) =∞
• f0(x) = 1
3√3 x2
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (0,∞)
• Z
√3
xdx=3 4x43 +C
A gy¨okf¨uggv´enyek ¨osszehasonl´ıt´asa
Hiperbola f(x) =x1n,np´aratlan pozit´ıv eg´esz f(x) =x1
• Df = (−∞,0)∪(0,∞)
• Rf = (−∞,0)∪(0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→0−f(x) =−∞
• lim
x→0+f(x) =∞, lim
x→∞f(x) = 0
• f0(x) =−xn+1n
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (−∞,0)
• Z 1
xn dx= x−n+1
−n+ 1 +C, n6= 1
• Df = (−∞,0)∪(0,∞)
• Rf = (−∞,0)∪(0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→0−f(x) =−∞
• lim
x→0+f(x) =∞, lim
x→∞f(x) = 0
• f0(x) =−x12
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (−∞,0)
• Z 1
xdx= ln|x|+C
Hiperbola f(x) =x1n,np´aros pozit´ıv eg´esz f(x) =x12
• Df = (−∞,0)∪(0,∞)
• Rf = (0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→0−f(x) =∞
• lim
x→0+f(x) =∞, lim
x→∞f(x) = 0
• f0(x) =−xn+1n
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (−∞,0)∪(0,∞)
• Z 1
xn dx= x−n+1
−n+ 1 +C
• Df = (−∞,0)∪(0,∞)
• Rf = (0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→0−f(x) =∞
• lim
x→0+f(x) =∞, lim
x→∞f(x) = 0
• f0(x) =−x23
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (−∞,0)∪(0,∞)
• Z 1
x2dx=−1 x+C A hiperbol´ak ¨osszehasonl´ıt´asa
Exponenci´alis f¨uggv´eny f(x) =ax,a >1 f(x) =ex
• Df = (−∞,∞)
• Rf = (0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→∞f(x) =∞
• f0(x) =axlna
• Df0 = (−∞,∞)
• Rf0 = (0,∞)
• Z
axdx= ax lna+C
• Df = (−∞,∞)
• Rf = (0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→∞f(x) =∞
• f0(x) =ex
• Df0 = (−∞,∞)
• Rf0 = (0,∞)
• Z
exdx=ex+C
Exponenci´alis f¨uggv´eny f(x) =ax,0< a <1 f(x) = 1ex
• Df = (−∞,∞)
• Rf = (0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞, lim
x→∞f(x) = 0
• f0(x) =axlna
• Df0 = (−∞,∞)
• Rf0 = (−∞,0)
• Z
axdx= ax lna+C
• Df = (−∞,∞)
• Rf = (0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞, lim
x→∞f(x) = 0
• f0(x) = 1ex ln 1e
=− 1ex
• Df0 = (−∞,∞)
• Rf0 = (−∞,0)
• R 1
e
x
dx= (1e)x
ln(1e) =− 1ex
+C
Exponenci´alisok ¨osszehasonl´ıt´asa
Logaritmus f¨uggv´eny f(x) = loga(x),a >1 f(x) = lnx
• Df = (0,∞)
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→0+f(x) =−∞, lim
x→∞f(x) =∞
• f0(x) = xln1a
• Df0 = (0,∞)
• Rf0 = (0,∞)
• Df = (0,∞)
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→0+f(x) =−∞, lim
x→∞f(x) =∞
• f0(x) = 1x
• Df0 = (0,∞)
• Rf0 = (0,∞)
Logaritmus f¨uggv´eny f(x) = loga(x),0< a <1 f(x) = log1
e(x)
• Df = (0,∞)
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→0+f(x) =∞, lim
x→∞f(x) =−∞
• f0(x) = xln1a
• Df0 = (0,∞)
• Rf0 = (−∞,0)
• Df = (0,∞)
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→0+f(x) =∞, lim
x→∞f(x) =−∞
• f0(x) = 1
xln(1e) =−x1
• Df0 = (0,∞)
• Rf0 = (−∞,0) Logaritmusok ¨osszehasonl´ıt´asa
Szinuszf¨uggv´eny f(x) = sinx
• Df = (−∞,∞)
• Rf = [−1,1]
• f minden¨utt folytonos,
• lim
x→−∞f(x)´es lim
x→∞f(x)nem l´etezik
• f0(x) = cosx
• Df0 = (−∞,∞)
• Rf0 = [−1,1]
• Z
sinx dx=−cosx+C
Koszinuszf¨uggv´eny f(x) = cosx
• Df = (−∞,∞)
• Rf = [−1,1]
• f minden¨utt folytonos
• lim
x→−∞f(x)´es lim
x→∞f(x)nem l´etezik
• f0(x) =−sinx
• Df0 = (−∞,∞)
• Rf0 = [−1,1]
• Z
cosx dx= sinx+C
Tangensf¨uggv´eny f(x) =tgx
f(x) =tgx= sinx cosx
• Df = (−∞,∞)\ {π2 +kπ|k∈Z}
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→π2+kπ−f(x) =∞, lim
x→π2+kπ+f(x) =−∞
• lim
x→−∞f(x)´es lim
x→∞f(x)nem l´etezik
• f0(x) = cos12x
• Df0 = (−∞,∞)\ {π2 +kπ|k∈Z}
• Rf0 = [1,∞)
Kotangensf¨uggv´eny f(x) =ctgx
f(x) =ctgx= cosx sinx
• Df = (−∞,∞)\ {kπ|k∈Z}
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→kπ−f(x) =−∞, lim
x→kπ+f(x) =∞
• lim
x→−∞f(x)´es lim
x→∞f(x)nem l´etezik
• f0(x) =−sin12x
• Df0 = (−∞,∞)\ {kπ|k∈Z}
• Rf0 = (−∞,−1]
Arkuszszinusz f¨uggv´eny f(x) =arcsinx
• Df = [−1,1]
• Rf =
−π2,π2
• fa−1-ben jobbr´ol, az1-ben balr´ol folytonos, min- den¨utt m´ashol folytonos
• lim
x→−1+f(x) =−π2, lim
x→1−f(x) =π2
• f0(x) = √ 1
1−x2
• Df0 = (−1,1)
• Rf0 = [1,∞)
Arkuszkoszinusz f¨uggv´eny f(x) =arccosx
• Df = [−1,1]
• Rf = [0, π]
• fa−1-ben jobbr´ol, az1-ben balr´ol folytonos, min- den¨utt m´ashol folytonos
• lim
x→−1+f(x) =π, lim
x→1−f(x) = 0
• f0(x) =−√1
1−x2
• Df0 = (−1,1)
• Rf0 = (−∞,−1]
Arkusztangens f¨uggv´eny f(x) =arctgx
• Df = (−∞,∞)
• Rf = −π2,π2
• f minden¨utt folytonos
• lim
x→−∞f(x) =−π2, lim
x→∞f(x) = π2
• f0(x) = 1+x12
• Df0 = (−∞,∞)
• Rf0 = (0,1]
Arkuszkotangens f¨uggv´eny f(x) =arcctgx
• Df = (−∞,∞)
• Rf = (0, π)
• f minden¨utt folytonos
• lim
x→−∞f(x) =π, lim
x→∞f(x) = 0
• f0(x) =−1+x12
• Df0 = (−∞,∞)
• Rf0 = [−1,0)
Szinusz hiperbolikusz f¨uggv´eny f(x) =shx
f(x) =shx= ex−e−x 2
• Df = (−∞,∞)
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−∞, lim
x→∞f(x) =∞
• f0(x) =chx
• Df0 = (−∞,∞)
• Rf0 = [1,∞)
• Z
shx dx=chx+C
Koszinusz hiperbolikusz f¨uggv´eny f(x) =chx
f(x) =chx= ex+e−x 2
• Df = (−∞,∞)
• Rf = [1,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =∞, lim
x→∞f(x) =∞
• f0(x) =shx
• Df0 = (−∞,∞)
• Rf0 = (−∞,∞)
• Z
chx dx=shx+C
Tangens hiperbolikusz f¨uggv´eny f(x) =thx
f(x) =thx= shx chx
• Df = (−∞,∞)
• Rf = (−1,1)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−1, lim
x→∞f(x) = 1
• f0(x) = 1 ch2x
• Df0 = (−∞,∞)
• Rf0 = (0,1]
Kotangens hiperbolikusz f¨uggv´eny f(x) =cthx
f(x) =cthx=chx shx
• Df = (−∞,0)∪(0,∞)
• Rf = (−∞,−1)∪(1,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) =−1, lim
x→0−f(x) =−∞
• lim
x→0+f(x) =∞, lim
x→∞f(x) = 1
• f0(x) =− 1 sh2x
• Df0 = (−∞,0)∪(0,∞)
• Rf0 = (−∞,0)
Area szinusz hiperbolikusz f¨uggv´eny f(x) =arshx
• Df = (−∞,∞)
• Rf = (−∞,∞)
• fminden¨utt folytonos
• lim
x→−∞f(x) =−∞, lim
x→∞f(x) =∞
• f0(x) = √1
x2+1
• Df0 = (−∞,∞)
• Rf0 = (0,1]
Area koszinusz hiperbolikusz f(x) =archx
f¨uggv´eny
• Df = [1,∞)
• Rf = [0,∞)
• f az 1-ben jobbr´ol folytonos, minden¨utt m´ashol folytonos
• lim
x→1+f(x) = 0, lim
x→∞f(x) =∞
• f0(x) = √ 1
x2−1
• Df0 = (1,∞)
• Rf0 = (0,∞)
Area tangens hiperbolikusz f¨uggv´eny f(x) =arthx
• Df = (−1,1)
• Rf = (−∞,∞)
• f minden¨utt folytonos
• lim
x→−1+f(x) =−∞, lim
x→1−f(x) =∞
• f0(x) =1−x12
• Df0 = (−1,1)
• Rf0 = [1,∞)
Area kotangens hiperbolikusz f(x) =arcthx
f¨uggv´eny
• Df = (−∞,−1)∪(1,∞)
• Rf = (−∞,0)∪(0,∞)
• f minden¨utt folytonos
• lim
x→−∞f(x) = 0, lim
x→−1−f(x) =−∞
• lim
x→1+f(x) =∞, lim
x→∞f(x) = 0
• f0(x) = 1−x12
• Df0 = (−∞,−1)∪(1,∞)
• Rf0 = (−∞,0)
Abszol´ut ´ert´ek f¨uggv´eny f(x) =|x|
f(x) =|x|=
−x hax <0 0 hax= 0 x hax >0
• Df = (−∞,∞)
• Rf = [0,∞)
• f minden¨utt folytonos,
• lim
x→−∞f(x) =∞, lim
x→∞f(x) =∞
• f0(x) =
−1 hax <0 1 hax >0
• Df0 = (−∞,0)∪(0,∞)
• Rf0 ={−1,1}
Altal´anos hatv´any f¨uggv´eny´ f(x) =xα,αirracion´alis f(x) =x
√
5, x√15, x−
√
5, x−√15
• Df = [0,∞), haα >0,Df = (0,∞), haα <0
• Rf = [0,∞), haα >0,Rf = (0,∞), haα <0
• f a null´aban balr´ol folytonos, minden¨utt m´ashol folytonos, haα >0
• f minden¨utt folytonos, haα <0
• lim
x→0+f(x) = 0, lim
x→∞f(x) =∞, haα >0
• lim
x→0+f(x) =∞, lim
x→∞f(x) = 0, haα <0
• f0(x) =αxα−1
• Df0 = (0,∞)
• Rf0 = (0,∞),haα >0
• Rf0 = (−∞,0),haα <0
• Z
xαdx= xα+1 α+ 1 +C