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### an equation in which the highest power of an unknown quantity is a square

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The quadratic models obtained from regression analysis for Y1 (CK-MB), Y2 (SGOT) and Y3 (LDH) were as follows.
As observed for LDP, the cotton SDP also significantly decreased with the increment in irrigation water salinity and the data fitted best to a quadratic model.
In carrying out the graphic display of the observed and estimated production of eggs for each animal it was observed that the linear model with intercept G=UN and R=UNR was the best fit for the production curve of eggs per animal, with 83% and 87% efficiency for BPR and WPR hens, respectively, while the other models did not reach 76% efficiency, independent of breed (model with intercept G=UN and R=ANTE(1), and quadratic model with intercept G=UN and R=ARH(1)).
1: Performance Measure of Reduced Quadratic Model of MRR.
Model comparisons for bully victimization indicate that the quadratic model fit the data better than the linear model and the cubic model.
The highest S content (Figure 3) were observed in the 150% dose and were adjusted to the decreasing quadratic model, with adequate averages at the 100%, 150%, 200% doses and mineral fertilization treatment, according to Malavolta et al.
ANOVA analysis was also performed for COD quadratic model (Table 4).
The DEF2 variable is not significant and therefore a quadratic model would not be suitable for these firms.
After investigation of 4 different variables ie, pH values (A), temperature (B), fermentation time (C) and substrate concentration (D), the nonlinear quadratic model (30) is given as equation:
For the quadratic model an equation of the form y = [alpha] + [beta] * OI + y * [OI.
This section uses three representative models of SPSS [10] data analysis software in linear models, power model, and quadratic model, to deal with the survey data.
Vedder and Gallaway (1991) postulate a quadratic model as follows:
Based on their price of both rice grains and fertilizers in 2014 with a quadratic model, an optimal N rate was calculated as 178-203 kg N ha-1 yr-1 under POCU but 364-374 kg N ha-1 yr-1 under NCU.
Thus, although the quadratic model will always be disadvantaged when compared with the linear model (by virtue of having an extra parameter), these results suggest that through 2012, counts provided no evidence of any moderation in the population growth rate.
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