When First Order Derivative Is Positive Then Function Is
If the first derivative of a function is positive, then the graph of the function lies above the x-axis. Negative... View Article
If the first derivative of a function is positive, then the graph of the function lies above the x-axis. Negative... View Article
Wavelength is the distance between identical points in the adjacent cycles of crests of a wave. Below figure shows the... View Article
Let (x1, y1) and (x2, y2) be the two given points. Slope of the line passing through the given points... View Article
Aryl group is a simple, fragrant compound in which one hydrogen atom is detached from the ring and allows it... View Article
In general, wood is recognised as an anisotropic material. However, in engineering elastic model terms, wood is considered as an... View Article
KCl is more ionic because the ionic character increases as down the group while decreases along the period in the... View Article
The two main conditions for equilibrium are given below: The first condition is that the net force on the object... View Article
A complex number z = x + iy can be written in polar form z = reiθ that means z... View Article
Let P be the principal amount of money. Given that the rate of interest si 2%, i.e. R = 2%... View Article
If the sequence {an} is in GP, such that a4/a6= 1/ 4 and a2 + a5 = 216, then a1... View Article
sigma 1 to infinity (1+a+a2+…ar-1)/r! Solution: ∑r = 1∞ (1+a+a2+…ar-1)/r! = ∑r = 1∞ 1(ar-1)/(a-1)r! = (1/(a-1))[∑r = 1∞ ar/r!... View Article
Solution: Let a = x-d b = x c = x+d a+b+c = x-d+x+x+d = 3x = 3/2 ( Given... View Article
Solution: Given series 0.2 + 0.22 + 0.222 + …to n => (2/10)+(22/100)+(222/1000)+….n terms = 2(0.1+0.11+0.111+… n terms) Multiply and... View Article
Solution: Given √2, 2/3, 2√2/9,… is 16/2187 This is a GP with a = √2 r = √2/3 The nth... View Article
Solution: Let a/r, a, ar be the first three terms of GP Given sum = 7/9 and product = -8/27... View Article
If a, b and c are positive numbers in a GP, then the roots of the quadratic equation (loge a)x2... View Article
Solution: Given sum of infinite geometric series = 4 a/(1-r) = 4 ..(i) Second term = 3/4 So ar =... View Article
Solution: Given ln(a + c), ln (a – c), ln (a – 2b + c) are in A.P 2 ln(c-a)... View Article
Solution: Given x,y,z are in AP. y-x = z-y x-y = y-z Taking reciprocal 1/(x-y) = 1/(y-z) Rearranging we get... View Article
Solution: Given a,b,c are in AP Check the options. If a2, b2, c2 are in AP, then b2-a2 = c2-b2... View Article