its dot product but rearrange for cos. since cos is in between -1 and 1, you but the a.b/|a||b| in between those then absolute value so its only less than 1.16 a part 2 was cauchy swartz inequality for vectors, but I had no idea how to prove it lmao, hopefully I get 1 mark at least for doing some algebra
That's what I gotDoes anyone remember the answer for the integration (3+5cosx)^-1 or (5+3cosx)^-1? Is it (ln3)/4
was this the one for the angles at which r(t).v(t)=0congrats to whoever solved the 5 marker in its entirety, i got like half way then the algebra was getting horrendous
Ah fuck yeh that's smartits dot product but rearrange for cos. since cos is in between -1 and 1, you but the a.b/|a||b| in between those then absolute value so its only less than 1.
that was easy 4 marksDoes anyone remember the answer for the integration (3+5cosx)^-1 or (5+3cosx)^-1? Is it (ln3)/4
i just realised i fkd the difference of squares part for thatDoes anyone remember the answer for the integration (3+5cosx)^-1 or (5+3cosx)^-1? Is it (ln3)/4
u will lose 1 for ecfi just realised i fkd the difference of squares part for that
i did (4-x)(4+x) far out, its (2-x)(2+x) wasnt it . oh well two more marks lost
why did you sub in time of flight. i did dot product. then discriminant is greater than 0 to get a range for theta.the 5 marker was just dot product then sub in tof for t or atleast what i did
wasnt it to 1dpwhat did people get for the slope one. i got a surd within a surd for constant v. its just when forces = 0
was it oh shit i dont think i did thatwasnt it to 1dp
4. Something to 1dp??what did people get for the slope one. i got a surd within a surd for constant v. its just when forces = 0
oh that seems familiar maybe i did4. Something to 1dp??
i just remember two questions having 1dpwas it oh shit i dont think i did that
4.2?4. Something to 1dp??