


1. 

ѧʶ漸
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磺 2^3+3*1-8/4=9

2. 
ѧʹЩ
 abs       ֵ
 atn       
 cos       
 exp       ָ
 int       Բ
 log       Ȼ
 rnd       
 sin       
 sqr       ƽ
 tan       
 sec                           Sec(X)=1/Cos(X)
 csec                          Cosec(X)=1/Sin(X)
 ctan                          Cotan(X)=1/Tan(X)
 asin                        Arcsin(X)=Atn(X/Sqr(-X*X+1))
 acos                        Arccos(X)=Atn(-X/Sqr(-X*X+1))+2*Atn(1)
 asec                        Arcsec(X)=Atn(X/Sqr(X*X-1))+Sgn((X)-1)*(2*Atn(1))
 acsec                       Arccosec(X)=Atn(X/Sqr(X*X-1))+(Sgn(X)-1)*(2*Atn(1))
 actan                       Arccotan(X)=Atn(X)+2*Atn(1)
 sinh      ˫                HSin(X)=(Exp(X)-Exp(-X))/2
 cosh      ˫                HCos(X)=(Exp(X)+Exp(-X))/2
 tanh      ˫                HTan(X)=(Exp(X)-Exp(-X))/(Exp(X)+Exp(-X))
 ctanh     ˫                HCotan(X)=(Exp(X)+Exp(-X))/(Exp(X)-Exp(-X))
 sech      ˫                HSec(X)=2/(Exp(X)+Exp(-X))
 csech     ˫                HCosec(X)=2/(Exp(X)-Exp(-X))
 asinh     ˫       HArcsin(X)=Log(X+Sqr(X*X+1))
 acosh     ˫       HArccos(X)=Log(X+Sqr(X*X-1))
 atanh     ˫       HArctan(X)=Log((1+X)/(1-X))/2
 asech     ˫       HArcsec(X)=Log((Sqr(-X*X+1)+1)/X)
 acsech    ˫       HArccosec(X)=Log((Sgn(X)*Sqr(X*X+1)+1)/X)
 actanh    ˫       HArccotan(X)=Log((X+1)/(X-1))/2

3. ȼ

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