If the area of a triangle is known to be a fixed value s, then the functional relation between the height h and the base a of the triangle is h=______ And then h is of A______ Function

If the area of a triangle is known to be a fixed value s, then the functional relation between the height h and the base a of the triangle is h=______ And then h is of A______ Function

The function relation between the height h and the base a of a triangle is h = 2Sa. Since s is a fixed value, h is the inverse proportion function of A. therefore, the answer to this question is: H = 2Sa; inverse proportion
It is known that the sum of the first n terms of the sequence {an} is Sn, A1 = 1, Sn = nan-n (n-1). There is a formula for finding the general term of the sequence {an} and a formula for finding the sequence after it,
∵ Sn = nan-n (n-1) = n (SN-S (n-1)) - n (n-1) ∵ (n-1) Sn ns (n-1) = n (n-1) ∵ divide both sides by n (n-1): (SN) / N - (s (n-1)) / (n-1) = 1 ∵ sequence {(SN) / N} is arithmetic sequence ∵ (SN) / N = S1 / 1 + (n-1) * 1 = n ∵ Sn = n ^ 2
For example, a child measured the electric power, and now measured that the electric energy consumed by this appliance is 0.2KW · h in 15min, and calculated the electric power!
P = power consumption / time
P=0.2kWh/0.25=0.8kW
Given that the area of a triangle is 2cm2, write the functional relationship between any side a (CM) and the height h (CM) on this side,
h=4÷a
Given that the sum of the first n terms of the sequence an is Sn, and an = 1, a (n + 1) = 1 / 3Sn, find the values of A2, A3, A4 and the general formula of the sequence an
The solution of SN-S (n-1) is an = (4 / 3) ^ (n-1), but the solution of A2 is 4 / 3
An = 1, a (n + 1) = 1 / 3Sn, A2 = 1 / 3 calculated by this formula
S (n + 1) - Sn = a (n + 1) = 1 / 3 * SNS (n + 1) = 4 / 3 * Sn, so the sequence {Sn} is an equal ratio sequence whose first term is S1 = A1 = 1 and common ratio is 4 / 3, then Sn = S1 * q ^ (n-1) = (4 / 3) ^ (n-1) an = SN-S (n-1) = (4 / 3) ^ (n-1) - (4 / 3) ^ (n-2) = 1 / 3 * (4 / 3) ^ (n-2) when n = 1, A1 = 1 / 4 does not conform, so A1 = 1An = 1 / 3 *
Electric power and time
Power is the amount of work done per second, but our electrical appliances, such as electric lights and air conditioners, refer to the amount of work done per hour, not the amount of work done per second?
At present, the units of power are w (watt) and kW (kilowatt). Watt represents J / s, while 1kW represents 1000j / s. therefore, both represent how much work the current has done in one second
Maybe you can see that kW is associated with kW. H, which means that 1 kW works for 1 hour. It is an electric energy unit, not an electric power unit
Power is the work done per unit time. Its magnitude has nothing to do with time. It can be calculated by the ratio of work to time.
Second is the main unit of time, and hour is the common unit. Household appliances point out that work is done every hour. Divide the work done every hour by 3600 to get the work done every second, which is power.
It depends on the unit of power. Generally, the power of electrical appliances is expressed in W, which means the work done by electrical appliances within 1 s.
The unit of power is also one kW, 1kW = 1000W
Therefore, electrical appliances do not mean work done per hour, but generally work done per second
If the area of a triangle is known to be 12 square centimeters, then the functional relation between the height HCM and the bottom acm of the triangle is h = ----, and then h is a-----
The first blank is 24 / A, and the second blank is what
Inverse scale function
In the sequence {an}, A1 = 1, an + 1 = [(n + 1) / N] * an + 2 (n + 1), let BN = an / N, (1) prove that the sequence {BN} is an arithmetic sequence, and find its general formula
(2) Find the value of all positive integers P so that the sum of a continuous P term in {BN} is the eighth term in the sequence [an}
an+1=[(n+1)/n]*an+2(n+1),
an+1/(n+1)=an/n+2
bn=an/n
bn+1=bn+2
{BN} is an arithmetic sequence
b1=a1=1
bn=2n-1
an=n*bn=n(2n-1)
a8=120
p=2 4 6 8 10
(1)
Divide both sides of the equation by N + 1
a(n+1)/(n+1)=an/n +2
A (n + 1) / (n + 1) - an / N = 2.
a1/1=1/1=1
The sequence {an / N} is an arithmetic sequence with 1 as the first term and 2 as the tolerance.
And BN = an / n
The sequence {BN} is an arithmetic sequence with 1 as the first term and 2 as the tolerance.
bn=1+2(n-1)=2n-1
Common... Expansion of general term of sequence {BN}
(1)
Divide both sides of the equation by N + 1
a(n+1)/(n+1)=an/n +2
A (n + 1) / (n + 1) - an / N = 2.
a1/1=1/1=1
The sequence {an / N} is an arithmetic sequence with 1 as the first term and 2 as the tolerance.
And BN = an / n
The sequence {BN} is an arithmetic sequence with 1 as the first term and 2 as the tolerance.
bn=1+2(n-1)=2n-1
The general formula of sequence {BN} is BN = 2N-1.
(2)
an/n =2n-1
an=n(2n-1)=2n²-n
When n = 1, A1 = 2-1 = 1
The general term formula of sequence {an} is an = 2n & # 178; - n
a8=2×64-8=120
Let the first term of continuous P term be BM, then the last term be B (M + p-1)
bm+b(m+1)+...+b(m+p-1)
=2[m+(m+1)+...+(m+p-1)]-p
=2[pm+(1+2+...+p-1)]-p
=2[pm+p(p-1)/2]-p
=2pm+p²-2p
bm+b(m+1)+...+b(m+p-1)=120
2pm+p²-2p=120
m=(120-p²+2p)/(2p)
m. If P is a positive integer, then p > 0, (120-p & # 178; + 2P) / (2P) > 0
120-p²+2p>0
121-p²+2p-1>0
(p-1)²
Is electric energy the same as electric work in physics?
A: it's not exactly the same. In essence, it's all energy, and the unit is Joule. However, they are also different: electric energy = electric energy is the electric potential energy and electric field energy related to excitation, polarization, ionization and other processes. In this perspective, electric energy is a state quantity. But electric energy can also be a process quantity, such as
How do you say that? The feeling of electric power mainly refers to the work done by some motors and electrical appliances, such as motors and refrigerators, while the electric energy mainly refers to the actual amount of energy consumed.
In fact, the difference between the two is not easy to say, it depends on the specific situation. You see what other experts say.
They are in the same unit, but electric energy is energy and electric work is work. Let's put it this way, electricity can be used to do work, and there is bound to be a loss.
dissimilarity
Is the base length and area of an isosceles triangle a function?
No
Because the waist length is uncertain
When the waist length is determined, the length of the bottom edge is a function of the area
There seems to be another angle
That must be
The area of a triangle is low times high