1,已知成本C与产量q的函数关系式为C=4q^2+7,求当产量q=30时的边际成本!

1,已知成本C与产量q的函数关系式为C=4q^2+7,求当产量q=30时的边际成本!
1,已知成本C与产量q的函数关系式为C=4q^2+7,求当产量q=30时的边际成本!

1,已知成本C与产量q的函数关系式为C=4q^2+7,求当产量q=30时的边际成本!
MC=C‘=（4q^2+7）'=8q 把q=30代人,MC=240

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什么是边际成本

For high-frequency electronic machine impedance control PCB design technology


------------ Called aoarAL =--- ■-d ? A_ d where a, e asked the conductor plate of a capacitor dielectri...

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For high-frequency electronic machine impedance control PCB design technology


------------ Called aoarAL =--- ■-d ? A_ d where a, e asked the conductor plate of a capacitor dielectric of dielectric constant A a parallel conducting plates of area (m. ) d the distance to ask a conductor plate (m) c a capacitor - ground surface to ask capacitance (pF) (b) 6 layer PWB (high-speed circuit board) Figure 96 layer PWB (high-speed circuit board) Figure 1O power plane and ground face configuration between the capacitance calculation 7 Manufacturing / metrology / substrate manufacturing simulation technology, the layer distance and dielectric constant (resin volume),Beats By Dre Studio, conductor range (the difference between top and bottom), the conductor thickness ratio of small volatility how to determine the frequency characteristics. As shown in Figure ll, finished PWB size and volatility of various degree of certainty is an important high-frequency signals with PWB issues? Shown in Table 3, because each supplier of the resin substrate design value is different for each business use different PWB substrate's substrate, each element ranging from PWB manufacturing business reasons, PWB different characteristic impedance is an objective reality, in the amount of e-juice, make sure the heating transport measuring device,herve leger toronto, ask when the correction from the machine and human parasitic capacitive coupling,tods shoes outlet, sMA connector repeatability (clamping torque) and the determination is necessary. Seek TDR waveform measured turbulence with network analyzer measurement results of the integration (Fig. l2) and the cross section of Table 3FR-4 substrate (prepreg) the manufacturer's design value PrintedCircuitInformation printed circuit information 2004No7 ... ?: 0> Internet and 0> port even layer push gourd snail Mindanao 1E. ... ... CAM & CAD ... ... ... ... ... ... ... ... ... a ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... characteristic impedance of the elements: ① layer thickness: h, sh conductor range: Aw, etching factors: ef} Conductor thickness: t,herve leger skirts, △ t,vibram five fingers outlet, dielectric constant: ? r, A ? r @ or without solder resist coating (film thickness) (a) characteristic impedance elements (microstrip line structure) network core network crumbling Slaughter Pirates of the entire Bin - two 11 two E =><:×= two Jl === E Pa Bin with chewing turn exhausted basket () characteristic impedance elements (stripline structure) Reference Figure 11 Impedance elements surface layer of various size and integration of simulation tools are necessary. . , Very good to avoid the s parameter measurement (s11: attenuation. S21: Reflection) A connection ~ Zo = 62n time. Spider 'quite avoid the good one s parameters measured (sl1 attenuation $ 21: Reflection) A junction Zo = 53n when lSI1: Attenuation (dB) Frequency (GHz1l $ 21 Reflection (dB) I linear (s11 Attenuation (dB ) Figure 12 junction of Z. unconformity with the reflection / attenuation [1] Takahashi Tsutomu High state machine corresponding to the electronic wave, / dagger a little b / dagger overnight two, destroy the system Imperial 7 Issues temporary increase in electronic technology, 2003.6 Lin block school (on the next page 35) the differential strip line structure shown in Figure 7 / / a 7_ {||//////// Figure 6s is the distance between the two differential lines; h is the formation of two differential line and asked the distance; b to strip the differential characteristic impedance. set single- the root of the characteristic impedance of microstrip line ZZDIFF ---- 2Z (1-O.148 (EXP (a 0.96S /) zDIFF a differential microstrip line characteristic impedance. Author CAI Qing plot had eight plants in Nanjing Radio PCB technology has long been engaged to work on a number of articles in journals published. differential arrangement of the plug seat when the line is to be out of the PCB, the quiet 7 if known single stripline characteristic impedance z.. if , strip the differential characteristic impedance by the following formula: ZDIFF = 2Z .. (1-0.347 (EXP (a 2.95 impedance of 100Q formation of the shorter length needle inserted media should be arranged in the first seat of the short needle in a row, and two adjacent, so that the mismatch can also lead shorter socket, resulting in a small number of reflections . two signal pins and other pins should be arranged between a ground pin or power pin (5) differential cable when some of the same speed, but because the reliability or the signal decreases, and differential to drive, this time the cable selection should be selected characteristic impedance l00Q cable, cable wire with the same two signal leads the other powder to be changed Lu Chan and a roar of broken lift. the type with vertical blue just to sail single-deletion change | [change ~.
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