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Limits Continuity and Differentiability question

2024 · Shift 1 · Q34
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  2. /JEE Advanced
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  4. /Limits Continuity and Differentiability
  5. /2024 · Shift 1 · Q34

Limits Continuity and Differentiability question

2024 · Shift 1 · Q34

JEE AdvancedMathematicsLimits Continuity and DifferentiabilityMCQ+3 / −1

Let f:R→Rf: \mathbb{R} \rightarrow \mathbb{R}f:R→R and g:R→Rg: \mathbb{R} \rightarrow \mathbb{R}g:R→R be functions defined by

f(x)={x∣x∣sin⁡(1x),xeq0,0,x=0, and g(x)={1−2x,0≤x≤12,0, otherwise .f(x)=\left\{\begin{array}{ll} x|x| \sin \left(\frac{1}{x}\right), & x eq 0, \\ 0, & x=0, \end{array} \quad \text { and } g(x)= \begin{cases}1-2 x, & 0 \leq x \leq \frac{1}{2}, \\ 0, & \text { otherwise } .\end{cases}\right.f(x)={x∣x∣sin(x1​),0,​xeq0,x=0,​ and g(x)={1−2x,0,​0≤x≤21​, otherwise .​

Let a,b,c,d∈Ra, b, c, d \in \mathbb{R}a,b,c,d∈R. Define the function h:R→Rh: \mathbb{R} \rightarrow \mathbb{R}h:R→R by

h(x)=af(x)+b(g(x)+g(12−x))+c(x−g(x))+dg(x),x∈R.h(x)=a f(x)+b\left(g(x)+g\left(\frac{1}{2}-x\right)\right)+c(x-g(x))+d g(x), x \in \mathbb{R} .h(x)=af(x)+b(g(x)+g(21​−x))+c(x−g(x))+dg(x),x∈R.

Match each entry in List-I to the correct entry in List-II.

List-I List-II
(P) If a=0a = 0a=0, b=1b = 1b=1, c=0c = 0c=0, and d=0d = 0d=0, then (1) hhh is one-one.
(Q) If a=1a = 1a=1, b=0b = 0b=0, c=0c = 0c=0, and d=0d = 0d=0, then (2) hhh is onto.
(R) If a=0a = 0a=0, b=0b = 0b=0, c=1c = 1c=1, and d=0d = 0d=0, then (3) hhh is differentiable on R\mathbb{R}R.
(S) If a=0a = 0a=0, b=0b = 0b=0, c=0c = 0c=0, and d=1d = 1d=1, then (4) the range of hhh is [0,1][0, 1][0,1].
(5) the range of hhh is {0,1}\{0, 1\}{0,1}.

The correct option is
  1. A
    (P)→(4)(Q)→(3)(R)→(1)(\mathrm{P}) \rightarrow(4)(\mathrm{Q}) \rightarrow(3)(\mathrm{R}) \rightarrow(1)(P)→(4)(Q)→(3)(R)→(1)(S) →\rightarrow→ (2)
  2. B
    (P)→(5)(Q)→(2)(R)→(4)(\mathrm{P}) \rightarrow(5)(\mathrm{Q}) \rightarrow(2)(\mathrm{R}) \rightarrow(4)(P)→(5)(Q)→(2)(R)→(4)(S) →(3)\rightarrow(3)→(3)
  3. C
    (P)→(5)(Q)→(3)(R)→(2)(S)→(4)(\mathrm{P}) \rightarrow(5)(\mathrm{Q}) \rightarrow(3)(\mathrm{R}) \rightarrow(2)(\mathrm{S}) \rightarrow(4)(P)→(5)(Q)→(3)(R)→(2)(S)→(4)
  4. D
    (P)→(4)(Q)→(2)(R)→(1)(S)→(3)(\mathrm{P}) \rightarrow(4)(\mathrm{Q}) \rightarrow(2)(\mathrm{R}) \rightarrow(1)(\mathrm{S}) \rightarrow(3)(P)→(4)(Q)→(2)(R)→(1)(S)→(3)
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