matlab 求积分报错syms m b a ky=((2*m*(0.15*tan(b)+a)^2/

matlab 求积分报错syms m b a ky=((2*m*(0.15*tan(b)+a)^2/((15-100/39.27^2)*((k(1)+k(2))*(0.15*tan(b)-l*sin(b))/(m*(0.15*tan(b)*sin(b)+a)))^0.5 )))*((k(1)+k(2))*(0.15*(sec(b))^2-l*cos(b))*(0.15*tan(b)*sin(b)+