Can someone check if my answer is correct? Thank you!
1 answer:
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Solution: The missing reason in Step 8 is substitution of .
Explanation:
The given steps are used to prove the formula for law of cosines.
From step 5 it is noticed that our equation is
..... (1)
From step 7 it is noticed that the value of is
.
So by substituting for
in equation (1) we get the equation of step 8, i.e.,
Hence, the missing reason in Step 8 is substitution of .
Answer:
The value of
Step-by-step explanation:
Given that
now to find from the given functions f(x) and f'x
let
Then put x=1 in above function we get
(from the table f(1)=3 and f(3)=6)
Therefore h(1)=6
Now to find h'(1)
Let
(since
)
put x=1 in above function we get
(From the table
and
)
Therefore