Its a typo - but a very misleading typo! There's also one in Q20 with x instead of k in some of the answers. But a huge thank you to Jacqueline from me - I've used your questions with a couple of tutees and they've been a godsend. Thanks! And thanks to Drew too for the videos, really helpful.
I have another method for Q7. You could subtract the two equations which yields the distance between the curves at any x coordinatione. Then minimise it, giving x=5/6
Jacqueline Tyler is actually a legend
Hello isn’t question 12 misleading in the sense its asking for SA but has m^3 as the answers unit
yes its supposed to be m^2 i was stuck on it for ages trying to understand the question
Its a typo - but a very misleading typo! There's also one in Q20 with x instead of k in some of the answers. But a huge thank you to Jacqueline from me - I've used your questions with a couple of tutees and they've been a godsend. Thanks! And thanks to Drew too for the videos, really helpful.
Thanks, great vid
For question 20, isn't 15
I have another method for Q7. You could subtract the two equations which yields the distance between the curves at any x coordinatione. Then minimise it, giving x=5/6
for question 6 why do u divide 10/11 / 2
Because it wants how the ratio from 0
where did that a disappear to in q15
hi i cant find the vid u mentioned in 19:40. nice vid btw
do i need to know derivatives or integrals of trigonometric funcitons for TMUA ?
For q17 why can’t 17 use chain Rule?
In quuestion 10, doesnt imaginary roots always occur in pairs? that is, it is impossible to have 3 real roots and 1 imaginary root .... right?
Not sure if this helps but im pretty sure, one of the real roots are repeated so the function has 4 real roots but 3 distinct real roots
for q16, can we not just take x^-5/3 out of the equation and solve from there or does that mess up something with negation
For the last question, it wants the values of x for which it has 4 solutions. But you gave the range?
how can you tell in the exam if a function eg y=x^1.8 will negative for any values of x or not
The .8 means that there's a root to do, which always come out positive by definition
@@rtwodrew2 1.8 = 9/5 so since the denominator of the power is odd, wouldn't there be negative values to the solution too?
this is probably really stupid how is the gradient 6x = 5 in question 7
i think its bcuz the line has to be parallel to the other line so same gradient