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Calculus Concepts

 Basic Integration

The integration of sin(u) du = -cos(u) + C

 

Example:

The integration of sin(3x) dx

u = 3x, so du = 3 dx

Add this 3 by changing the formula to

(1/3) integration of sin(3x) 3 dx

Therefore the answer is

-(1/3) cos(3x) + C

 

 

                 

The integration of cos(u) du = sin(u) + C

 

Example:

The integration of cos(x^2) x dx

u = x^2, so du = 2x dx

Add this 2 by changing the formula to

(1/2) integration of cos(x^2) 2x dx

Therefore the answer is

(1/2) sin(x^2) + C

                   

                  

 The integration of tan(u) du = ln abs[sec(u)] + C

 

Example:

The integration of tan(7x) dx

u = 7x, so du = 7 dx

Add this 7 by changing the formula to

(1/7) integration of tan(7x) 7 dx

Therefore the answer is

(1/7) ln abs[sec(7x)] + C

 

                        

The integration of cot(u) du = ln abs[sin(u)] + C

 

Example:

The integration of cot(2x^2) x dx

u = 2x^2, so du = 4x dx

Add this 4 by changing the formula to

(1/4) integration of cot(2x^2) 4x dx

Therefore the answer is

(1/4) ln abs[sin(2x^2)] + C

 

 

 

                    

The integration of sec(u) du = ln abs[sec(u) + tan(u)] + C

 

Example:

The integration of sec(x) dx

u = x, so du = dx

Nothing needs to be added in this case so

The answer is

ln abs[sec(x) + tan(x)] + C

 

             

The integration of csc(u) du = ln abs[csc(u) – cot(u)] + C

 

Example:

The integration of csc(8x) dx

u = 8x, so du = 8 dx

Add this 8 by changing the formula to

(1/8) integration of csc(8x) 8 dx

Therefore the answer is

(1/8) ln abs[csc(8x) – cot(8x)] + C

 

 

                          

The integration of [sec(u)]^2 du = tan(u) + C

 

Example:

The integration of [sec(3x)]^2 dx

u = 3x, so du = 3 dx

Add this 3 by changing the formula to

(1/3) integration of [sec(3x)]^2 3 dx

Therefore the answer is

(1/3) tan(3x) + C

 

 

 

The integration of [sec(u)][tan(u)] du = sec(u) + C

 

Example:

The integration of [sec(10x)][tan(10x)] dx

u = 10x, so du = 10 dx

Add this 10 by changing the formula to

(1/10) integration of [sec(10x)][tan(10x)] 10 dx

Therefore the answer is

(1/10) sec(10x) + C

 

 

 

                    

The integration of [csc(u)]^2 du = -cot(u) + C

 

Example:

The integration of [csc(x)]^2 dx

u = x, so du = dx

Nothing needs to be added in this case so

The answer is

-cot(x) + C

 

 

 

           

The integration of [csc(u)][cot(u)] du = -csc(u) + C

 

Example:

The integration of [csc(9x)][cot(9x)] dx

u = 9x, so du = 9 dx

Add this 9 by changing the formula to

(1/9) integration of [csc(9x)][cot(9x)] 9 dx

Therefore the answer is

-(1/9) csc(9x) + C

 

 

 

                   

The integration of (1/u) du = ln abs[u] + C

 

Example:

The integration of [1/(6x)] dx

u = 6x, so du = 6 dx

Add this 6 by changing the formula to

(1/6) integration of [1/(6x)] 6 dx

Therefore the answer is

(1/6) ln abs[6x] + C

 

 

 

The integration of e^u du = e ^u + C

 

Example:

The integration of e^(5x) dx

u = 5x, so du = 5 dx

Add this 5 by changing the formula to

(1/5) integration of e^(5x) 5 dx

Therefore the answer is

(1/5) e^(5x) + C

 

 

Advanced Integration

The integration of arcsin u du =

 

u arcsin(u) + (1/a) root(1 - u^2) + C

The integration of arctan u du =

 

u arctan(u) – (1/2) ln(1 + u^2) + C

The integration of [ dx / (x^2 + a^2)] =

 

(1/a) arctan(x/a) + C

The integration of [dx / root(a^2 – x^2)] =

 

arcsin(x / a) + C

Differentiation

Integration

Rules

Logic Problems!