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Class12|Mean Value Theorem|WBJEE|AIEEE|WBJEE Main|Suggestion

 


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How do you calculate MVT?

Two procedure mentioned here

Q1.Description of Rolle's Theorem :

All possible questions:

QA.How do you do Rolle's theorem?

QB.What are the three conditions of Rolle's theorem?

QC.What is the conclusion of Rolle's theorem?

QD.How do you find C in Rolle's theorem?

1.Rolle's Theorem

a.\small f(x) is continuous at \small [a,b]

b.\small f(x) is differentiable at \small (a,b)

c.\small f(a)=f(b), there is \small a<c<b for which \small f^{'}(c)=0.

Q2.Description of Lagranges Mean Value Theorem:

QA.What is LMV Theorem?

QB.How do you verify Lagrange's value theorem?

2.Lagranges Mean Value Theorem

All possible questions:

a.\small f(x) is continuous at \small [a,b]

b.\small f(x) is differentiable at \small (a,b)

c.\small f(a)=f(b), there is \small a<c<b for which \small f^{'}(c)=\frac{f(b)-f(a)}{b-a}.


Q3.If \small a+b+c=0, then the equation \small 3ax^2+2bx+c=0 has 

a.Exist only one solution

b.There exist no solution

c.There exist maximum one solution

d.No Solution

Ans:b

Q4.If \small a_{n}x^n+a_{n-1}x^{n-1}+....+a_{1} equation has a positive solution say,\small \alpha,then the solution is 

a.\small < \alpha

b.\small > \alpha

c.\small =\alpha

d.\small \geq \alpha

Ans:a

Q5.\small xlogx=3-x this equation has _______________ number of solution in this interval of (1,3)

a.Only one solution

b.Exactly one solution

c.No Solution

d,.Maximum one solution

Ans:a

Q6.\small \phi(x)=a^{sinx} for this function the Rolle's theorem will be applicable 

a.Any inetrval 

b.\small [0,\frac{\pi}{2}]

c.\small [0,\pi]

d.\small (0,\pi)


Ans:d

Q7.\small \phi(x)=1-x^{\frac{2}{3}} for this function the Rolle's theorem will be applicable 

a.Any inetrval 

b.\small [-1,1]

c.\small [-1,0]

d.\small (0,1)

Ans:b

Q8.\small y=|x| this function satisfy how many conditions of Rolle's Theorem in this interval \small [-1,1]

a.one condition

b.two condition

c.all condition

d.No condition

Ans:a,d

Q9.Find the value of \small c,If \small f(x)=x^3-3x-1 function satisfy all the condition of Lagrange's M-V theorem in this interval \small [\frac{-11}{7},\frac{13}{7}]

a.2

b.-1

c.0

d.1

Ans:b,d

Q10.Rolle's theorem will be applicable for \small f(x)=x^3+bx^2+ax+5 in this interval [1,3] when \small c=2+\frac{1}{\sqrt 3}

a.a=-11

b.a=11

c.b=6

d.b=-6

Ans:b,d

Q11.Rolle's theorem will be applicable for \small f(x)=x^3+px^2-qx+4 in this interval [-2,2] when \small c=\frac{1}{3}(1+\frac{1}{\sqrt 13})

a.p=-1

b.p=1

c.q=4

d.q=3

Ans:a,c

Q12.If\small f(x)=(x-1)(x-2)(x-3)(x-4),\small f^{'}(x)=0 has three equation \small \alpha,\beta,\gamma

a.\small 1<\alpha<2

b.\small 2<\beta<3

c..\small 3<\gamma<4

d..\small 4<\alpha<5

Ans:a,b,c


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