y(0 ' diany ty-o レ 4.(15 pts) Suppose gi(t), va(t) are solutions of (1 + t)y" + (sint)y ey 0. Suppose also that n attains a maximum and y/2 attains a minimum, both at the point t 5. Do y1, /...
This is the sequence 1,3,6,10,15 the pattern is addin 1 more than last time but what is the name for this patternThese are called the triangular numbers The sequence is 1 3=1+2 6=1+2+3 10=1+2+3+4 15=1+2+3+4+5 You can also observe this pattern x _________ x xx __________ x xx xxx __________ x xx xxx xxxx to see why they're called triangular numbers. I think the Pythagoreans (around 700 B.C.E.) were the ones who gave them this name. I do know the...