Question
The growing concern over climate change has led to
global efforts to electrify the transportation sector. In parallel, cost of Li-ion (Lithium-ion) battery technology has decreased by a staggering order of magnitude in the past decade. The convergence of these two factors has resulted in a unique time in our history where we are at the cusp of a dramatic transition in the transportation sector, with electric vehicles poised to replace petrol vehicles. Directions : In the following question, a small passage is given. The options below have 4 sentences. From these, choose the sentence as your answer, that best describes the passage briefly, without the addition of any other information. If no sentence serves as the summary of the given passage, choose option 5, ‘None of these’ as your answer.Solution
Only option 1 summarises the paragraph. Option 2 and 3- The cost of Li-ion batteries has been decreasing. So, there is no need to find a new way to reduce the cost. Option 4- These are the two factors that are driving us for the transition, not preventing us.
If α, β are the roots of the equation x² – px + q = 0, then the value of α2+β2+2αβ isÂ
...I. 64x2 - 64x + 15 Â = 0 Â Â Â Â
II. 21y2 - 13y + 2Â =0
I. 6x² - 23x + 7 = 0
II. 6y² - 29y + 9 = 0
If 3x – 2y = 10 and xy = 11, the value of 27x³ – 8y³ is __________.
Solve both equations I & II and form a new equation III in variable ‘r’ (reduce to lowest possible factor) using roots of equation I and II as per ...
I. 2p² - 11p + 12 = 0
II. 2q² - 17q + 36 = 0
I. Â x2 = 10 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
II. Â y2 - 9y + 20 = 0
...Find the roots of the equation 6p² – 5p – 6 = 0.
if x satisfies 3x² – 5x – 12 = 0, find the sum of reciprocals of roots.
I. 6y2 - 17y + 12 = 0
II. 15x2 - 38x + 24 = 0