The math help thread

Find the Deritive:

1. g(t)= e^(1+3t)^2
2. y= te^-t^2

for these problems (e) is that little number 2.71 or something. The exponents inside are confusing me. I know I have to use chain rule though.

1. g'(t)=e^(1+3t)^2*2(1+3t)*3
2. y'=e^-t^2+te^-t^2*2(-t)*-1




Also I got a probability question:
There's a 100% chance i get <60% for psych.
There's a 36% chance i get <50% for psych.
There's a 35% chance i get <60% for calc.
There's a 3% chance i get <50% for calc.
There's a 60% chance i get <60% for physics.
There's a 20% chance i get <50% for physics.

I will get kicked out of uni if I fail 2 course (get <50%). or if I fail 1 course and get <60% on 2 other courses.
What's my chance of getting kicked out.