Maple/积分

Maple 积分符号

Int(x^2,x);

显示求 $\int x^{2} d x$ ；

int(x^2,x);

$\frac{1}{3} x^{3}$ ；

简单积分

f:=8x^3+25x^2-3x-1;

int(f,x)

$2 * x^{4} + (25 / 3) * x^{3} - (3 / 2) * x^{2} - x$

int(1/x,x); $l n (x)$

int(a^x,x);

$\frac{a^{x}}{l n (a)}$

int(sin(x),x)

$- \cos (x)$

int(sqrt{x^2+a^2},x);

$(1 / 2) * x * \sqrt{(} x^{2} + a^{2}) + (1 / 2) * a^{2} * l n (x + \sqrt{(} x^{2} + a^{2}))$

int(sqrt(x^2+a^2)/x,x);

$\sqrt{(} x^{2} + a^{2}) - a^{2} * l n ((2 * a^{2} + 2 * \sqrt{(} a^{2}) * \sqrt{(} x^{2} + a^{2})) / x) / \sqrt{(} a^{2})$

int(sqrt(x^2+a^2)/x^5,x);

$- (1 / 4) * (x^{2} + a^{2})^{(} 3 / 2) / (a^{2} * x^{4}) +$ $(1 / 8) * (x^{2} + a^{2})^{(} 3 / 2) / (a^{4} * x^{2}) -$ $(1 / 8) * \sqrt{(} x^{2} + a^{2}) / a^{4} +$ $(1 / 8) * l n ((2 * a^{2} + 2 * \sqrt{(} a^{2}) * s q r t (x^{2} + a^{2})) / x) / (a^{2} * \sqrt{(} a^{2}))$

int((x^2+a^2)^3/2,x)

$(1 / 14) * x^{7} + (3 / 10) * a^{2} * x^{5} + (1 / 2) * a^{4} * x^{3} + (1 / 2) * a^{6} * x$

复杂积分

int(ln(a^(exp(x^2))), x)；

$x * \ln (a^{(} e x p (x^{2}))) - x * \exp (x^{2}) * l n (a) - (1 / 2 * I) * \ln (a) * \sqrt{(} P i) * e r f (I * x) >$

int(cos(tan(x)), x)

$- (1 / 2 * I) * (- I * S i (t a n (x) - I) * s i n h (1)$ $+ C i (t a n (x) - I) * c o s h (1))$ $+ (1 / 2 * I) * (I * S i (t a n (x) + I) * s i n h (1)$ $+ C i (t a n (x) + I) * c o s h (1))$

int(cos(x^3), x);

(1/6)*sqrt(Pi)*2^(1/3)*((9/2)*2^(2/3)*((2/7)*x^6+2/3)*sin(x^3)/(sqrt(Pi)*x^2)+3*2^(2/3)*(cos(x^3)*x^3-sin(x^3))/(sqrt(Pi)*x^2)-(9/7)*x^7*2^(2/3)*sin(x^3)*LommelS1(11/6, 3/2, x^3)/(sqrt(Pi)*(x^3)^(11/6))-3*x^7*2^(2/3)*(cos(x^3)*x^3-sin(x^3))*LommelS1(5/6, 1/2, x^3)/(sqrt(Pi)*(x^3)^(17/6)))

int(exp(tan(x)), x)

(1/2*I)*exp(I)*Ei(1, -tan(x)+I)-(1/2*I)*exp(-I)*Ei(1, -tan(x)-I)

int(ln(sin(x)*cos(x)), x)

(2*I)*ln(2)*ln(exp(I*x))-I*ln(exp(I*x))*ln(I*(-(exp(I*x))^2-1)*((exp(I*x))^2-1)/(exp(I*x))^2)-I*dilog(exp(I*x))+I*dilog(exp(I*x)+1)+I*ln(exp(I*x))*ln(exp(I*x)+1)-I*ln(exp(I*x))^2+I*ln(exp(I*x))*ln(1+I*exp(I*x))+I*ln(exp(I*x))*ln(1-I*exp(I*x))+I*dilog(1+I*exp(I*x))+I*dilog(1-I*exp(I*x))

int(sin(x^(1/3)), x)

-3*x^(2/3)*cos(x^(1/3))+6*cos(x^(1/3))+6*x^(1/3)*sin(x^(1/3))

int(x^3*ln(sin(x)), x)

-(1/4)*x^4*ln(exp(I*x))+(1/4)*x^4*ln(exp((2*I)*x)-1)-(1/4)*x^4*ln(1-exp(I*x))+I*x^3*polylog(2, exp(I*x))-3*x^2*polylog(3, exp(I*x))+(1/8*I)*x^4*Pi*csgn(sin(x))^3+6*polylog(5, exp(I*x))-(1/4)*x^4*ln(exp(I*x)+1)+(1/8*I)*x^4*Pi*csgn(I*sin(x))*csgn(sin(x))-3*x^2*polylog(3, -exp(I*x))+(1/8*I)*x^4*Pi*csgn(sin(x))*csgn(I*exp(-I*x))*csgn(I*(exp((2*I)*x)-1))+6*polylog(5, -exp(I*x))+(1/4)*x^4*ln(-1/2*I)+I*x^3*polylog(2, -exp(I*x))+(1/8*I)*x^4*Pi*csgn(sin(x))^2*csgn(I*exp(-I*x))-(6*I)*x*polylog(4, -exp(I*x))+(1/8*I)*x^4*Pi*csgn(I*sin(x))^2+(1/20*I)*x^5-(1/8*I)*x^4*Pi*csgn(I*sin(x))^3-(6*I)*x*polylog(4, exp(I*x))+(1/8*I)*x^4*Pi*csgn(sin(x))^2*csgn(I*(exp((2*I)*x)-1))-(1/8*I)*x^4*Pi*csgn(I*sin(x))^2*csgn(sin(x))

重积分

int(x^2*cos(x^2), x, x)

$\int \int (x^{2} * c o s (x^{2}) d x d x$

-(1/4)*cos(x^2)-(1/4)*Pi*(FresnelS(sqrt(2)*x/sqrt(Pi))*sqrt(2)*x/sqrt(Pi)+cos(x^2)/Pi)

Int(ln(tan(x)*cos(y)), x, y)

$\int \int (l n (t a n (x) * c o s (y)) d x d y$

int(ln(tan(x)*cos(y)), x, y)

1   /cos(x) + I sin(x)\                      1   /
- ln|-----------------| ln(2) ln(exp(I y)) - - ln|
2   \     cos(x)      /                      2   \

                                    /       /          2    \\
  cos(x) + I sin(x)\                |sin(x) \(exp(I y))  + 1/|
  -----------------| ln(exp(I y)) ln|------------------------|
       cos(x)      /                \    cos(x) exp(I y)     /

     1   /cos(x) + I sin(x)\             2
   - - ln|-----------------| ln(exp(I y)) 
     4   \     cos(x)      /

     1   /cos(x) + I sin(x)\                                
   + - ln|-----------------| ln(exp(I y)) ln(1 + I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) + I sin(x)\                                
   + - ln|-----------------| ln(exp(I y)) ln(1 - I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) + I sin(x)\                      
   + - ln|-----------------| dilog(1 + I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) + I sin(x)\                      
   + - ln|-----------------| dilog(1 - I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) - I sin(x)\                      1   /
   - - ln|-----------------| ln(2) ln(exp(I y)) + - ln|
     2   \     cos(x)      /                      2   \

                                    /       /          2    \\
  cos(x) - I sin(x)\                |sin(x) \(exp(I y))  + 1/|
  -----------------| ln(exp(I y)) ln|------------------------|
       cos(x)      /                \    cos(x) exp(I y)     /

     1   /cos(x) - I sin(x)\             2
   + - ln|-----------------| ln(exp(I y)) 
     4   \     cos(x)      /

     1   /cos(x) - I sin(x)\                                
   - - ln|-----------------| ln(exp(I y)) ln(1 + I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) - I sin(x)\                                
   - - ln|-----------------| ln(exp(I y)) ln(1 - I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) - I sin(x)\                      
   - - ln|-----------------| dilog(1 + I exp(I y))
     2   \     cos(x)      /

     1   /cos(x) - I sin(x)\                      
   - - ln|-----------------| dilog(1 - I exp(I y))
     2   \     cos(x)      /

     1                           1                        
   - - I dilog(1 + I tan(x)) y + - I dilog(1 - I tan(x)) y
     2                           2

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