maths Flashcards
1
Q
Value of the nth term
A
Un=a+(n-1)d
2
Q
Sum of n terms
A
Sn=n/2 (a+l)
Sn=n/2 (2a+(n-1)d)
3
Q
Nth term in a GP
A
Un=ar^n-1
4
Q
change to function: y=f(x)+a
A
move graph upward by ‘a’ units
5
Q
change to function: y=f(x+a)
A
move graph left by ‘a’ units
6
Q
change to function: y=af(x)
A
stretch graph vertically by scale factor ‘a’
7
Q
change to function: y= f(ax)
A
stretch graph horizontally by scale factor 1/a
8
Q
change to function: y= -f(x)
A
reflect in x-axis
9
Q
change to function: y=f(-x)
A
reflect in y-axis
