lst=[["(-5+3*x)^2/(-1+2*x)^(7/2)","x",1],
["1/(-5/exp(m*x)+2*exp(m*x))","x",1],
["1/(a+b*cos(x))","x",1],
["1/(3+3*cos(x)+4*sin(x))","x",1],
["1/(4+3*cos(x)+4*sin(x))","x",1],
["1/(5+3*cos(x)+4*sin(x))","x",1],
["1/(6+3*cos(x)+4*sin(x))","x",1],
["1/2*log((-a^2+x^2)^2)","x",1]]