1.The percentage P(T) of tomato seeds that germinate depends in a linear way on the temperatre T (within certain bonds).At 12'C,40% geraminate,whereas at 17'C,70% germinate.(a) Write a formula for P(T).(b) At what temperature does the percentage reac
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1.The percentage P(T) of tomato seeds that germinate depends in a linear way on the temperatre T (within certain bonds).At 12'C,40% geraminate,whereas at 17'C,70% germinate.(a) Write a formula for P(T).(b) At what temperature does the percentage reac
1.The percentage P(T) of tomato seeds that germinate depends in a linear way on the temperatre T (within certain bonds).At 12'C,40% geraminate,whereas at 17'C,70% germinate.
(a) Write a formula for P(T).
(b) At what temperature does the percentage reach 100%?
(c) State the rate of change of P with respect to T.
2.Let f(x)=x^2-3x+11 and let g be a linear function that increases by the same amount as f on the interval 2
1.The percentage P(T) of tomato seeds that germinate depends in a linear way on the temperatre T (within certain bonds).At 12'C,40% geraminate,whereas at 17'C,70% germinate.(a) Write a formula for P(T).(b) At what temperature does the percentage reac
1）设线性关系p(t)=kt+b
则有40%=12k+b,70%=17k+b
解得k=1/50,b=9/25
所以P(T)=T/50+9/25
2）因为P(T)=100%
所以有T/50+9/25=100%
解得T=32℃
3）T=50P(T)-18
2、设g(x)=a*f(x)
且g(2)=f(2) =>a=1
则有g(x)=x^2-3x+11 (2
大神，我题目都看不懂，甘拜下风！！