t=linspace(-2,2,200); plot(t,t,t,t.^2,t, t.^3); title('x , x^2, x^3','fontsize',16) h=legend('x','x^2','x^3'); grid on set(h,'fontsize',16)
t=linspace(-3,3,200); t0=linspace(0,3,200); plot(t0,sqrt(t0),t,abs(t).^(1/3).*sign(t)); title('x^{1/2}, x^{1/3}','fontsize',16) h=legend('x^{1/2}','x^{1/3}',2); grid on
t=linspace(-3.01,3,200); plot(t,1./t) title('1/x','fontsize',16) ylim([-4,4]) xlim([t(1),t(length(t))])
plot(t,1./t.^2); title('1/x^2','fontsize',16) ylim([-1,4]) xlim([t(1),t(length(t))]) grid on
t=linspace(-3,3,200); plot(t,abs(t)); title('|x|','fontsize',16) grid on
t=linspace(-2*pi,2*pi,200); plot(t,sin(t),t,cos(t)); title('sen(t),cos(t)','fontsize',16) h=legend('sen(t)','cos(t)'); grid on set(h,'fontsize',16) set(gca,'xtick',[-2*pi,-3/2*pi, -pi, -pi/2, 0,pi/2, pi,3*pi/2 2*pi]) set(gca,'xticklabel',... {'-2*pi'; '-3pi/2'; '-pi'; '-pi/2'; '0'; 'pi/2'; 'pi'; '3pi/2'; '2 pi'}) xlim([t(1),t(length(t))])
t=linspace(-pi,pi,500); plot(t,tan(t)) ylim([-6,6]); grid on title('tan(t)','fontsize',16) set(gca,'xtick',[ -pi, -pi/2, 0,pi/2, pi]) set(gca,'xticklabel',{ '-pi'; '-pi/2'; '0'; 'pi/2'; 'pi'})
t=linspace(-1,1,200); plot(t,asin(t),t,acos(t)); grid on title('arcsen(t),arccos(t)','fontsize',16) h=legend('arcsen(t)','arccos(t)'); set(h,'fontsize',16) set(gca,'ytick',[ -pi, -pi/2, 0,pi/2,pi]) set(gca,'yticklabel',{ '-pi'; '-pi/2'; '0'; 'pi/2' ; 'pi'})
t=linspace(-12,12,200); plot(t,atan(t)); grid on title('arctag(t)','fontsize',16) set(gca,'ytick',[ -1.5, 0,1.5]) set(gca,'yticklabel',{ '-pi/2'; '0'; 'pi/2'})
t=linspace(-2,2,200); t0=linspace(0.0001,2,200); plot(t,exp(t),t0,log(t0)); grid on title('e^t, log(t)','fontsize',16) h=legend('e^t','log(t)',2); set(h,'fontsize',16) t=linspace(-8,8,200);
