13.10.25.md (602B)
1 13/10/25 2 ======== 3 4 Odd and even functions 5 ---------------------- 6 7 - FIG1 is pre knowledge 8 - even functions are functions that are the same when reflected on the y axis 9 - odd functions are functions that are the same when reflected on the x axis 10 - odd functions must pass through (0,0) 11 - FIG2 shows what happens when multipling even and odd functions 12 - FIG3 shows sinh(x) and cosh(x) 13 - FIG4 shows tanh(x) 14 - FIG5 shows the identitys 15 - they are mostly the same, however sinh often needs to be negative to make them work 16 - sinh(x) derives to cosh(x) and vise versa 17 18 TODO 19 ---- 20 21 - look at conic sections