1
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $f(x)=\left\{\begin{array}{ll}3 a x-2 b, & x>1 \\ a x+b+1, & x<1\end{array}\right.$ and

$\lim \limits_{x \rightarrow 1} f(x)$ exists, then the relation between $a$ and $b$ is

A
$3 a-2 b=1$
B
$2 a-3 b=1$
C
$2 a+3 b=1$
D
$2 a+3 b=-1$
2
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The function $f(x)=\left\{\begin{array}{ll}\frac{2}{5-x}, & x<3 \\ 5-x, & x \geq 3\end{array}\right.$ is
A
left discontinuous at $x=3$
B
right discontinuous at $x=5$
C
left continuous at $x=3$
D
discontinuous at $x=5$
3
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If $y=f(x)$ is a thrice differentiable function and a bijection, then $\frac{d^2 x}{d y^2}\left(\frac{d y}{d x}\right)^3+\frac{d^2 y}{d x^2}=$
A
$y$
B
$-y$
C
$x$
D
0
4
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $f(x)=\left\{\begin{array}{cl}x^\alpha \sin \left(\frac{1}{x}\right), & x \neq 0 \\ 0, & x=0\end{array}\right.$

which of the following is true?

A
$f(x)$ is continuous and differentiable if $0 \leq \alpha<1$
B
$f(x)$ is discontinuous and not differentiable if $0 \leq \alpha<1$
C
$f(x)$ is continuous and differentiable for $\alpha>1$
D
$f(x)$ is discontinuous and differentiable for $\alpha>1$
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