Functions help

[high prairie]

i'm not sure why the mark scheme

[spice spire]

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[high prairie]

last part how can it lose the plus minus sign i don't get that part

[outer dirge]

So that x can be > 3

[high prairie]

i'm really confused because is x>3 for h(x) or h-1(x)

[marsh kiln]

For the first question , k = 3

So we have f(x) = 2x+3

And ff(x) means f(f(x))

[vague pond]

do you do cambridge

[high prairie]

oh i mean the last part

everything else is fine but i just dont understand when the express interms of h-1 (x)

they make the plus minus sign a plus instead a minus

like how do i determine whether its a plus or minus

[high prairie]

yes

[vague pond]

w

i do cambridge to

[vague pond]

what grade are you in

[high prairie]

im year 11

i think they call it grade 10 in america

[vague pond]

i am grade 6

so your in form 4

[vague pond]

when did you start cambridge

[high prairie]

form 4?

[high prairie]

like since i took igcse

[vague pond]

can you help me

i only started cambridge this year

[high prairie]

yeah sure

okay ill see if i can

[vague pond]

should i make a thread

bro

[high prairie]

okay

[vague pond]

should we do it here or at my thread?

[high prairie]

we can do it here its okay

[vague pond]

ok

[vague pond]

i need help with multiplication

i got 32 / 82