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का मान क्या है?

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Official Sr. Teacher Gr II NON-TSP MATHEMATICS (Held on :29 Oct 2018)
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  1. -2
  2. 2
  3. 0
  4. 4

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Option 1 : -2
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Sr. Teacher Gr II NON-TSP GK Previous Year Official questions Quiz 4
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संकेत:

खोजने के लिए बाह्यतम समाकलन की सीमा स्थिर है। इसलिए पहले x के संबंध में समाकलन करें

जब x के संबंध में समाकलन किया जाता है तो हमें y को एक स्थिरांक समझना चाहिए।

हम जानते हैं कि:

और:

गणना:

मानें कि, I = 

ज्ञात करना है:

बाह्यतम समाकलन की सीमा स्थिर है। इसलिए पहले x के संबंध में समाकलन करें

जब x के संबंध में समाकलन किया जाता है, तो हमें y को एक स्थिरांक समझना चाहिए।

हम जानते हैं कि और

= 2 [cos y]0π/2

= 2 [cos 90° - cos 0°]

= -2

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