integrals

• 2/3 x³
• 2x+C
• 4x+C
•  2/3 x³ +C 

• x² + C
• 1/2 x² + C
• 1/4 x² + C
• 2x² + C

• 4 sin(x) + C
• sin(x) / 4 + C
• -4 sin(x) + C
• -sin(x) / 4 + C

• -2 cos(x) + C
• 2 cos(x) + C
• cos(x) / 2 +C
• - cos (x) / 2 +C

• 2 tan(x) + C
• sec(x)tan(x) + C
• tan ²(x) + C
• tan(x) + C

The integration of f(x)= 1/tan(x) dx is:

• - ln Icos(x)I + C
• ln Isin(x)I +C
• sec² (x) + C
• - ln Isin(x)I +C

The integration of f(x)= sin(x)/cos(x) dx is:

• - ln Icos(x)I + C
• ln Isin(x)I +C
• sec² (x) + C
• - ln Isin(x)I +C

The integration of f(x)= 1/x dx

• ln IxI + C
• x² /2
• -x²/2
• -2x²

The integration of f(x)= 1/(x^-1) dx

• ln IxI + C
• x² /2
• -x²/2
• -2x²

Evaluate the definite integral.

• 3
• 9/2
• 9
• Not possible