【解析】T he discriminant of a quadratic is the expression inside the radical of the quadratic formula.b2-4(ac)Substitute in the values of a, b, and c.(-3)2-4(5·4)Evaluate the result to find the discriminant.71T he nature of the roots of the quadratic canfall into one of three...
The nature of the roots of the quadratic can fall into one of three categories depending on the value of the discriminant( ( )): ( >0)means there are ( 2) distinct real roots. ( =0)means there are ( 2) equal real roots, or ( 1) distinct real root. ( <0)means there are no...
In this case, we say that the roots are imaginary.Case IV: b2 –4ac > 0 and perfect square When a, b, and c are real numbers, a ≠ 0 and the discriminant is positive and perfect square, then the roots α and β of the quadratic equation ax2 + bx + c = 0 are real, ...
As a type of soil-borne parasite, RKN will inevitably interact with RAMs during its attack on plant host roots. Since the existence of beneficial microbes is likely a conserved strategy for plants12,16,17,18, we hypothesize that native RAMs may exhibit general suppression of RKNs to maximize ...
Here, we aim at better characterizing the evolution and function of the root mycobiota, by studying a diverse set of 41 cultured fungi that colonize roots of the non-mycorrhizal plant A. thaliana. Using comparative genomics and transcriptomics in combination with plant recolonization experiments, we...
The objective of this research project is to understand and to improve workers’ recovery from work stress. Although recovery during lunch breaks is the most common within-workday break, it has received only minor research attention. Therefore, we will s
2321C30 is△= ___.The nature of the roots of the equation is that it_ 25The discriminant of the quadratic equation in one variable xx2-x=,is△=_The nature of the roots of the equation is that it5 The discriminant of the quadratic equation in one variable x, 12C一C=2 i s△-_...
In the yellow soil, however, the addition of low amounts of methanotrophs enhanced the expression of nosZI genes (p < 0.01), while the addition of high amounts of methanotrophs increased the expression of norB and nosZII genes (p < 0.01). Linear discriminant analysis effect size ...
(Fig.2a). Nevertheless, 30 gene families primarily associated with the degradation of plant-derived C (such as starch, hemicellulose, cellulose and pectin) were enriched under warming, while 13 gene families were more abundant under control as revealed by linear discriminant analysis (LDA) effect ...
4 Functional space using the complete dataset. Probabilistic distributions of the 301 species with complete empirical information in the functional space defined by a PCA followed by varimax rotation based on both aboveground and fine-root traits. Each panel shows a combination of two of the four ...