∫(dtanx)/( 2 + tan^2 x)
∫(tanx)^2*(secx)^2*(secx)^2x*dx=∫(tanx)^2*(1+tan)^x*dtanx是怎么
∫ ( tan^2 x + tan^4 x )dx
求不定积分∫(tan^2x+tan^4x)dx
求不定积分∫tan(x/2)dx
求不定积分 ∫ tan^2 x dx
tan( x/2+π/4)+tan(x/2-π/4 )=2tanx
tan(X/2+π/4)+tan(x/2-π/4)=2tanx?
求证:tan(x/2+π/4)+tan(x/2-π/4)=2tanx
2tan^2(x/2)+2=4tan(
∫dx/(1+√(1-x^2))=? ∫tan^4(x)dx=?
求积分∫(sec^2x/2+tan^2x)dx
若(cosx/根号下1+tan^2x)+(sinx/根号下1+1/tan^2x),则x ( )