(a) A hero is going to save the world from Covid-19 virus. Guess who? Using appropriate software, sketch the following parametric curve to identify the hero. State the name of the software. Print-screen the curve and the coding that use to sketch the curve. (x(t)=&-12|t|+16|t-1|+12|t-2|-12|t-3|-16|t-4|+19/2|t-5|+15/2|t-6|-15/2|t-7|@&-2|t-8|+5/2|t-9|+17/2|t-10|-13/2|t-11|+5/2|t-13|-|t-14|-3/2|t-15|-3/2|t-16|@&-5/4|t-17|+11/4|t-18|+4|t-22|-4|t-23|+2|t-24|-1/2|t-25|-2|t-26|@&+1/2|t-27|+5/4(|t-15|-|t-16|-1)^2-1/2(|t-27|-|t-28|+1)^2+19/2 cos⁡(π/4(|t-11|-|t-13|))@&+14cos⁡(π/4(|t-18|-|t-19|+1))-3/4(|t-18|-|t-19|)-17/2 cos⁡(π/4(|t-19|-|t-21|))@&+9sin⁡(π/4(|t-21|-|t-22|+1))-10 (|t-13|)/(t-13)+20 (|t-17|)/(t-17)-6 (|t-25|)/(t-25)-9) (y(t)=&14|t|-10|t-1|-4|t-2|-4|t-3|-10|t-4|+203/12|t-5|-35/12|t-6|-35/12|t-7|@&+35/12|t-8|+7/3|t-9|-7/3|t-10|+5/2|t-13|-5/2|t-14|-17/4|t-15|+6|t-16|@&-119/24|t-17|+77/24|t-18|+5/2|t-23|-9/2|t-24|+2|t-25|+|t-27|-|t-28|@&+1/2(|t-6|-|t-7|)^2-21/8 (|t-8|-|t-9|-1/9)^2+11/24(|t-10|-|t-11|-1)^2@&+1/4(|t-26|-|t-27|-2)^2-2sin⁡(π/4(|t-11|-|t-13|))+53/12 sin⁡(π/4(|t-18|-|t-19|+1))@&+7/2 sin⁡(π/4(|t-19|-|t-21|))-6sin⁡(π/4(|t-21|-|t-22|-1))+7/3 (|t-5|)/(t-5)+14/3 (|t-8|)/(t-8)@&+7 (|t-13|)/(t-13)+(5|t-25|)/2 1/(t-25)-1451/216 0≤t≤&28)