If f(x) = 5 cos 3 then f ’ (x) =
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2
Answer:
Correct answer is f(x) = 15
Answered by
0
3
π
)+4
=5cosx+3(cosxcos
3
π
−sinxsin
3
π
)+4
−5cosx+3(
2
cosx
−sinx
2
3
)+4
=
2
13
cosx−
2
3
3
sinx+4
Let
2
13
=a
2
3
3
=b
=acosx−bsinx+4
max value =
a
2
+b
2
+4
=
(
2
13
)
2
+(
2
3
3
)
2
+4
=
4
169+27
+4=
4
196
+4=
2
14
+4
=
2
22
=11
min value −(
2
14
−4)=−3
hope this helps please make me brainlist
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