Evaluate: `int_(-pi/4)^(pi/4)(x^9-3x^5+7x^3-x+1)/(cos^2x)dx`

Evaluate int_(-pi//4)^(pi//4)(x^(9)-3x^(5)+7x^(3)-x-1)/(cos^(2)x)dx .

Evaluate of each of the following integrals (1-15): int_(-pi//4)^(pi//4)(x^(11)-3 x^9+5x^7-x^5+1)/(cos^2x)dx

Evaluate: int_(-(pi)/(4))^((pi)/(4))(x^(9)-3x^(5)+7x^(3)-x+1)/(cos^(2)x)dx

Evaluate of each of the following integrals 15) : int_(-pi/4)^( pi/4)(x^(11)-3x^(9)+5x^(7)-x^(5)+1)/(cos^(2)x)dx

Evaluate: int_(pi/4)^(pi/3)(dx)/(sin^2x+3cos^2x)

Evaluate: int_(-pi//4)^(pi//4)(x+pi//4)/(2-cos2x)dx

Evaluate: int_(-pi/4)^( pi/4)(x+pi/4)/(2-cos2x)dx

int_(-pi//2)^(pi//2) (5sin^3 x+8sinx+4 cos^2x) dx