7/25/2019 5_1 Save the Kittens

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PLEASE SAVE THE ANIMALS

Given: Dont Do

This:

Do this: Given: Dont Do

This:

Do this:

2

2

x

yxx2

2

x

yxx2

2

2 x

yx

x

x

=

yx

1sin (x + 3) sin x + sin 3 Use sum formula!

31

21

1

+

2 + 3

6

61

3

1

2

1

+=

5

6

23

6=

+

cos 4 + cos 5 cos (4 + 5) = cos

(9)

Cant factor out a

function! Fin eac

"alue an a#

2

2 x+

2

2 x+

= x22

2 x+

=2

1 x+

$ition %itin

fractions cb

a

+

=c

a

b

a+

c

b

c

a

c

ba+=

+

3

2

5

1+ 3

3

2

5

15 +

= 1 + 23

2

5

1+

=15

1&

15

3+

=15

13

xyx

y+

+11 'ree ours %ort

of %oryxy

x

x

x

yxyx

++

=

+

+ 11 1

25 )

)

25)

= 35 * 2 =

33

25

=)

33

)

2

)

35

=xy

xy

11

1

+

i"e u, on mat

yxxy

xy

xy

xy

+=

+1

11

1

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c

ab

c

b

c

a b

c

a

b

a

1

Feel lie -ou cant

o an-tin.# )1(

)1(

1 b

b

b

a

+

+

=

21 b

aba

+

b

c

b

a

b

c

b

a

=ac 2b

ac sin x cos x * cos x sin x cos x * cos x =

sin x

cos x (sin x * 1)