Answer:
Step-by-step explanation:
22 + 1 = -x + 4
23 = -x + 4
- 4 - 4
________
19 = −x
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Answer:
Step-by-step explanation:
Differentiate:
Substitute into :
Therefore, 68 is the gradient of the tangent line at x=7:
when ,
Answer:
∠A is 30°
Step-by-step explanation:
Answer:
x= 0.4, or x = 2/5
Step-by-step explanation:
To find x you have to replace f(x) with 0 and solve for x
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