By converting into parametric equations,
<span><span>x(θ)=r(θ)cosθ=cos2θ<span>cosθ
</span></span><span>y(θ)=r(θ)sinθ=cos2θsinθ</span></span>
By Product Rule,
<span>x'(θ)=−sin2θcosθ−cos2θsinθ</span>
<span>x'<span>(π/2)</span>=−<span>sin(π)</span><span>cos<span>(π/2)</span></span>−<span>cos(π)</span><span>sin<span>(π/2)</span></span>=1</span>
<span>y'(θ)=−sin2θsinθ+cos2θcosθ</span>
<span>y'<span>(π/2)</span>=−<span>sin(π)</span><span>sin<span>(π/2)</span></span>+<span>cos(π)</span><span>cos<span>(π/2)</span></span>=0</span>
So, the slope m of the curve can be found by
<span>m=<span>dy/dx</span><span>∣<span>θ=<span>π2
</span></span></span>= <span><span>y'<span>(π/2)/</span></span><span>x'<span>(π/2)
</span></span></span></span>=0/1
=0
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
Answer:
Step-by-step explanation:
|-8.3| = 8.3
|8.3|= 8.3
Answer:
Step-by-step explanation:
138/8 = 17.25
I don't see any relationship...
A proportion can be written as an equation and equations are lines....
Answer: $3,484 <em>(I hope this is the correct way to do it)</em>
Step-by-step explanation:
The formula is: 
- SI = simple interest
- P = principal amount = $13,400
- R = interest rate (in percentage) =
% = 6.5% - T = time duration (in years) = 4 years
<em>If you want to find the total amount, add the principle amount and the interest.</em>
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